feat(config schema): add openapi-normalizer generator property

apps/generator-cli/src/config.schema.json

@@ -384,6 +384,68 @@
             }
           ]
         },
+        "openapi-normalizer": {
+          "description": "OpenAPI Normalizer transforms the input OpenAPI doc/spec (which may not perfectly conform to the specification) to make it workable with OpenAPI Generator.",
+          "type": "object",
+          "properties": {
+            "ADD_UNSIGNED_TO_INTEGER_WITH_INVALID_MAX_VALUE": {
+              "description": "when set to true, auto fix integer with maximum value 4294967295 (2^32-1) or long with 18446744073709551615 (2^64-1) by adding x-unsigned to the schema",
+              "type": "boolean"
+            },
+            "FILTER": {
+              "description": "When set to operationId:addPet|getPetById for example, it will add x-internal:true to operations with operationId not equal to addPet/getPetById (which will have x-internal set to false) so that these operations marked as internal won't be generated",
+              "type": "string"
+            },
+            "KEEP_ONLY_FIRST_TAG_IN_OPERATION": {
+              "description": "when set to true, only keep the first tag in operation if there are more than one tag defined",
+              "type": "boolean"
+            },
+            "REF_AS_PARENT_IN_ALLOF": {
+              "description": "when set to true, child schemas in allOf is considered a parent if it's a $ref (instead of inline schema)",
+              "type": "boolean"
+            },
+            "REFACTOR_ALLOF_WITH_PROPERTIES_ONLY": {
+              "description": "When set to true, refactor schema with allOf and properties in the same level to a schema with allOf only and, the allOf contains a new schema containing the properties in the top level",
+              "type": "boolean"
+            },
+            "REMOVE_ANYOF_ONEOF_AND_KEEP_PROPERTIES_ONLY": {
+              "description": "when set to true, oneOf/anyOf schema with only required properies only in a schema with properties will be removed",
+              "type": "boolean"
+            },
+            "REMOVE_X_INTERNAL": {
+              "description": "Set to true if you want to disable the default behavior of removing/hiding the x-internal in operations and model",
+              "type": "boolean"
+            },
+            "SET_CONTAINER_TO_NULLABLE": {
+              "description": "When set to array|set|map (or just array) for example, it will set nullable in array, set and map to true",
+              "type": "string"
+            },
+            "SET_PRIMITIVE_TYPES_TO_NULLABLE": {
+              "description": "When set to string|integer|number|boolean (or just string) for example, it will set the type to nullable (nullable: true)",
+              "type": "string"
+            },
+            "SET_TAGS_FOR_ALL_OPERATIONS": {
+              "description": "when set to a string value, tags in all operations will reset to the string value provided",
+              "type": "boolean"
+            },
+            "SET_TAGS_TO_OPERATIONID": {
+              "description": "when set to true, tags in all operations will be set to operationId or \"default\" if operationId is empty",
+              "type": "boolean"
+            },
+            "SIMPLIFY_ANYOF_STRING_AND_ENUM_STRING": {
+              "description": "when set to true, simplify anyOf schema with string and enum of string to just string",
+              "type": "boolean"
+            },
+            "SIMPLIFY_BOOLEAN_ENUM": {
+              "description": "when set to true, convert boolean enum to just enum",
+              "type": "boolean"
+            },
+            "SIMPLIFY_ONEOF_ANYOF": {
+              "description": "when set to true, simplify oneOf/anyOf by 1) removing null (sub-schema) or enum of null (sub-schema) and setting nullable to true instead, and 2) simplifying oneOf/anyOf with a single sub-schema to just the sub-schema itself",
+              "type": "boolean"
+            }
+          }
+        },
         "packageName": {
           "type": "string",
           "description": "package for generated classes (where supported)"