[#5000] improvement(server): Move tag object API to object path (#5027)

### What changes were proposed in this pull request?

Move tag related about metadata object API to object path

### Why are the changes needed?

Fix: #5000

### Does this PR introduce _any_ user-facing change?
Modified the document

### How was this patch tested?
Modified the UT.

clients/client-java/src/main/java/org/apache/gravitino/client/MetadataObjectTagOperations.java

@@ -52,7 +52,7 @@ class MetadataObjectTagOperations implements SupportsTags {
     this.restClient = restClient;
     this.tagRequestPath =
         String.format(
-            "api/metalakes/%s/tags/%s/%s",
+            "api/metalakes/%s/objects/%s/%s/tags",
             metalakeName,
             metadataObject.type().name().toLowerCase(Locale.ROOT),
             metadataObject.fullName());

clients/client-java/src/test/java/org/apache/gravitino/client/TestSupportTags.java

@@ -343,10 +343,11 @@ private void testListTags(SupportsTags supportsTags, MetadataObject metadataObje
     String path =
         "/api/metalakes/"
             + METALAKE_NAME
-            + "/tags/"
+            + "/objects/"
             + metadataObject.type().name().toLowerCase(Locale.ROOT)
             + "/"
-            + metadataObject.fullName();
+            + metadataObject.fullName()
+            + "/tags";
 
     String[] tags = new String[] {"tag1", "tag2"};
     NameListResponse resp = new NameListResponse(tags);
@@ -383,10 +384,11 @@ private void testListTagsInfo(SupportsTags supportsTags, MetadataObject metadata
     String path =
         "/api/metalakes/"
             + METALAKE_NAME
-            + "/tags/"
+            + "/objects/"
             + metadataObject.type().name().toLowerCase(Locale.ROOT)
             + "/"
-            + metadataObject.fullName();
+            + metadataObject.fullName()
+            + "/tags";
 
     TagDTO tag1 =
         TagDTO.builder()
@@ -435,11 +437,11 @@ private void testGetTag(SupportsTags supportsTags, MetadataObject metadataObject
     String path =
         "/api/metalakes/"
             + METALAKE_NAME
-            + "/tags/"
+            + "/objects/"
             + metadataObject.type().name().toLowerCase(Locale.ROOT)
             + "/"
             + metadataObject.fullName()
-            + "/tag1";
+            + "/tags/tag1";
 
     TagDTO tag1 =
         TagDTO.builder()
@@ -476,10 +478,11 @@ private void testAssociateTags(SupportsTags supportsTags, MetadataObject metadat
     String path =
         "/api/metalakes/"
             + METALAKE_NAME
-            + "/tags/"
+            + "/objects/"
             + metadataObject.type().name().toLowerCase(Locale.ROOT)
             + "/"
-            + metadataObject.fullName();
+            + metadataObject.fullName()
+            + "/tags";
 
     String[] tagsToAdd = new String[] {"tag1", "tag2"};
     String[] tagsToRemove = new String[] {"tag3", "tag4"};

docs/manage-tags-in-gravitino.md

@@ -212,7 +212,7 @@ Gravitino allows you to associate and disassociate tags with metadata objects. C
 You can associate and disassociate tags with a metadata object by providing the object type, object
 name and tag names.
 
-The request path for REST API is `/api/metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectName}`.
+The request path for REST API is `/api/metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectName}/tags`.
 
 <Tabs groupId='language' queryString>
 <TabItem value="shell" label="Shell">
@@ -222,12 +222,12 @@ curl -X POST -H "Accept: application/vnd.gravitino.v1+json" \
 -H "Content-Type: application/json" -d '{
   "tagsToAdd": ["tag1", "tag2"],
   "tagsToRemove": ["tag3"]
-}' http://localhost:8090/api/metalakes/test/tags/catalog/catalog1
+}' http://localhost:8090/api/metalakes/test/objects/catalog/catalog1/tags
 
 curl -X POST -H "Accept: application/vnd.gravitino.v1+json" \
 -H "Content-Type: application/json" -d '{
   "tagsToAdd": ["tag1"]
-}' http://localhost:8090/api/metalakes/test/tags/schema/catalog1.schema1
+}' http://localhost:8090/api/metalakes/test/objects/schema/catalog1.schema1/tags
 ```
 
 </TabItem>
@@ -252,23 +252,23 @@ You can list all the tags associated with a metadata object. The tags in Graviti
 inheritable, so listing tags of a metadata object will also list the tags of its parent metadata
 objects.
 
-The request path for REST API is `/api/metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectName}`.
+The request path for REST API is `/api/metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectName}/tags`.
 
 <Tabs groupId='language' queryString>
 <TabItem value="shell" label="Shell">
 
 ```shell
 curl -X GET -H "Accept: application/vnd.gravitino.v1+json" \
-http://localhost:8090/api/metalakes/test/tags/catalog/catalog1
+http://localhost:8090/api/metalakes/test/objects/catalog/catalog1/tags
 
 curl -X GET -H "Accept: application/vnd.gravitino.v1+json" \
-http://localhost:8090/api/metalakes/test/tags/schema/catalog1.schema1
+http://localhost:8090/api/metalakes/test/objects/schema/catalog1.schema1/tags
 
 curl -X GET -H "Accept: application/vnd.gravitino.v1+json" \
-http://localhost:8090/api/metalakes/test/tags/catalog/catalog1?details=true
+http://localhost:8090/api/metalakes/test/objects/catalog/catalog1/tags?details=true
 
 curl -X GET -H "Accept: application/vnd.gravitino.v1+json" \
-http://localhost:8090/api/metalakes/test/tags/schema/catalog1.schema1?details=true
+http://localhost:8090/api/metalakes/test/objects/schema/catalog1.schema1/tags?details=true
 ```
 
 </TabItem>
@@ -291,17 +291,17 @@ Tag[] tagsInfo = schema1.supportsTags().listTagsInfo();
 
 You can get an associated tag by its name for a metadata object.
 
-The request path for REST API is `/api/metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectName}/{tagName}`.
+The request path for REST API is `/api/metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectName}/tags/{tagName}`.
 
 <Tabs groupId='language' queryString>
 <TabItem value="shell" label="Shell">
 
 ```shell
 curl -X GET -H "Accept: application/vnd.gravitino.v1+json" \
-http://localhost:8090/api/metalakes/test/tags/catalog/catalog1/tag1
+http://localhost:8090/api/metalakes/test/objects/catalog/catalog1/tags/tag1
 
 curl -X GET -H "Accept: application/vnd.gravitino.v1+json" \
-http://localhost:8090/api/metalakes/test/tags/schema/catalog1.schema1/tag1
+http://localhost:8090/api/metalakes/test/objects/schema/catalog1.schema1/tags/tag1
 ```
 
 </TabItem>

docs/open-api/openapi.yaml

@@ -62,11 +62,11 @@ paths:
   /metalakes/{metalake}/tags/{tag}:
     $ref: "./tags.yaml#/paths/~1metalakes~1%7Bmetalake%7D~1tags~1%7Btag%7D"
 
-  /metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectFullName}:
-    $ref: "./tags.yaml#/paths/~1metalakes~1%7Bmetalake%7D~1tags~1%7BmetadataObjectType%7D~1%7BmetadataObjectFullName%7D"
+  /metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectFullName}/tags:
+    $ref: "./tags.yaml#/paths/~1metalakes~1%7Bmetalake%7D~1objects~1%7BmetadataObjectType%7D~1%7BmetadataObjectFullName%7D~1tags"
 
-  /metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectFullName}/{tag}:
-    $ref: "./tags.yaml#/paths/~1metalakes~1%7Bmetalake%7D~1tags~1%7BmetadataObjectType%7D~1%7BmetadataObjectFullName%7D~1%7Btag%7D"
+  /metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectFullName}/tags/{tag}:
+    $ref: "./tags.yaml#/paths/~1metalakes~1%7Bmetalake%7D~1objects~1%7BmetadataObjectType%7D~1%7BmetadataObjectFullName%7D~1tags~1%7Btag%7D"
 
   /metalakes/{metalake}/tags/{tag}/objects:
     $ref: "./tags.yaml#/paths/~1metalakes~1%7Bmetalake%7D~1tags~1%7Btag%7D~1objects"

docs/open-api/tags.yaml

@@ -178,7 +178,7 @@ paths:
           $ref: "./openapi.yaml#/components/responses/ServerErrorResponse"
 
 
-  /metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectFullName}:
+  /metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectFullName}/tags:
     parameters:
       - $ref: "./openapi.yaml#/components/parameters/metalake"
       - $ref: "./openapi.yaml#/components/parameters/metadataObjectType"
@@ -245,7 +245,7 @@ paths:
           $ref: "./openapi.yaml#/components/responses/ServerErrorResponse"
 
 
-  /metalakes/{metalake}/tags/{metadataObjectType}/{metadataObjectFullName}/{tag}:
+  /metalakes/{metalake}/objects/{metadataObjectType}/{metadataObjectFullName}/tags/{tag}:
     parameters:
       - $ref: "./openapi.yaml#/components/parameters/metalake"
       - $ref: "./openapi.yaml#/components/parameters/metadataObjectType"