Changes to Create a new asset group.

the asset_group/created_by response's property type changed from object to no type for status 200

the asset_group/owner response's property type changed from object to no type for status 200

added the new optional request property asset_group

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 429

the response property asset_group/ad_accounts_ids became required for the status 200

the response property asset_group/asset_group_description became required for the status 200

the response property asset_group/asset_group_name became required for the status 200

the response property asset_group/asset_group_types became required for the status 200

the response property asset_group/catalogs_ids became required for the status 200

the response property asset_group/created_by became required for the status 200

the response property asset_group/created_time became required for the status 200

the response property asset_group/id became required for the status 200

the response property asset_group/owner became required for the status 200

the response property asset_group/profiles_ids became required for the status 200

the response property asset_group/updated_time became required for the status 200

added the success response with the status 201

added the optional property asset_group/catalogs_ids to the response with the 200 status

endpoint added