Changes to Send Messages

added the new contact_accepted enum value to the items/type response property for the response status 201

added the new user_message enum value to the items/type response property for the response status 201

added the new workspaceuser_added_collaborator enum value to the items/type response property for the response status 201

added the new workspaceuser_added_guest enum value to the items/type response property for the response status 201

added the new workspaceuser_added_owner enum value to the items/type response property for the response status 201

added the new workspaceuser_removed enum value to the items/type response property for the response status 201

added the new workspaceuser_updated_collaborator enum value to the items/type response property for the response status 201

added the new workspaceuser_updated_guest enum value to the items/type response property for the response status 201

added the new workspaceuser_updated_owner enum value to the items/type response property for the response status 201

endpoint added