Adds Shared Channel related API endpoints (#27436)

* Adds Shared Channel management API endpoints

New endpoints for the following routes are added:

- Get Shared Channel Remotes by Remote Cluster at `GET
/api/v4/remotecluster/{remote_id}/sharedchannelremotes`
- Invite Remote Cluster to Channel at `POST
/api/v4/remotecluster/{remote_id}/channels/invite`
- Uninvite Remote Cluster to Channel at `POST
/api/v4/remotecluster/{remote_id}/channels/uninvite`

These endpoints are planned to be used from the system console, and
gated through the `manage_secure_connections` permission.

* Adds i18n messages for API errors

* Fix pagination flaky test

* Fix linter

* Adds the posibility of filtering shared channel remotes by home

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/platform/services/sharedchannel/sync_send.go

@@ -104,7 +104,7 @@ func (scs *Service) ForceSyncForRemote(rc *model.RemoteCluster) {
 	opts := model.SharedChannelRemoteFilterOpts{
 		RemoteId: rc.RemoteId,
 	}
-	scrs, err := scs.server.GetStore().SharedChannel().GetRemotes(opts)
+	scrs, err := scs.server.GetStore().SharedChannel().GetRemotes(0, 999999, opts)
 	if err != nil {
 		scs.server.Log().Log(mlog.LvlSharedChannelServiceError, "Failed to fetch shared channel remotes",
 			mlog.String("remote", rc.DisplayName),