Add support for Incident Integration Metadata APIs (#1356)

Co-authored-by: ci.datadog-api-spec <[email protected]>

Author: api-clients-generation-pipeline[bot]

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2023-03-03 14:44:25.679478",
-            "spec_repo_commit": "52f78f82"
+            "regenerated": "2023-03-06 17:22:48.159418",
+            "spec_repo_commit": "5248c0df"
         },
         "v2": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2023-03-03 14:44:25.692282",
-            "spec_repo_commit": "52f78f82"
+            "regenerated": "2023-03-06 17:22:48.172667",
+            "spec_repo_commit": "5248c0df"
         }
     }
 }