feat: define OIDC issuer profile (#16834)

* feat: define OIDC issuer profile

* fix: add `OIDC` to custom-wrods.txt

* doc: update description

* style: fix style check

* fix: add type

custom-words.txt

@@ -1385,6 +1385,7 @@ offboard
 offboards
 officedocument
 OLTP
+OIDC
 onboarded
 Onboarding
 Onboards

specification/containerservice/resource-manager/Microsoft.ContainerService/preview/2021-11-01-preview/managedClusters.json

@@ -3740,6 +3740,10 @@
           "title": "The pod identity profile of the Managed Cluster.",
           "description": "See [use AAD pod identity](https://docs.microsoft.com/azure/aks/use-azure-ad-pod-identity) for more details on AAD pod identity integration."
         },
+        "oidcIssuerProfile": {
+          "$ref": "#/definitions/ManagedClusterOIDCIssuerProfile",
+          "description": "The OIDC issuer profile of the Managed Cluster."
+        },
         "nodeResourceGroup": {
           "type": "string",
           "description": "The name of the resource group containing agent pool nodes."
@@ -4406,6 +4410,21 @@
       "title": "The pod identity profile of the Managed Cluster.",
       "description": "See [use AAD pod identity](https://docs.microsoft.com/azure/aks/use-azure-ad-pod-identity) for more details on pod identity integration."
     },
+    "ManagedClusterOIDCIssuerProfile": {
+      "type": "object",
+      "properties": {
+        "issuerURL": {
+          "readOnly": true,
+          "type": "string",
+          "description": "The OIDC issuer url of the Managed Cluster."
+        },
+        "enabled": {
+          "type": "boolean",
+          "description": "Whether the OIDC issuer is enabled."
+        }
+      },
+      "description": "The OIDC issuer profile of the Managed Cluster."
+    },
     "ManagedClusterUpgradeProfile": {
       "properties": {
         "id": {