Add support for shared dashboards endpoints (#1396)

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": "2023-04-14 15:23:10.548294",
-            "spec_repo_commit": "61947562"
+            "regenerated": "2023-04-17 14:56:00.638314",
+            "spec_repo_commit": "c9aa3e76"
         },
         "v2": {
             "apigentools_version": "1.6.4",
-            "regenerated": "2023-04-14 15:23:10.563832",
-            "spec_repo_commit": "61947562"
+            "regenerated": "2023-04-17 14:56:00.651442",
+            "spec_repo_commit": "c9aa3e76"
         }
     }
 }