MM-56876: Redis: first introduction (#27752)

```release-note
NONE
```

---------

Co-authored-by: Jesús Espino <jespinog@gmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/app/server.go

@@ -305,11 +305,13 @@ func NewServer(options ...Option) (*Server, error) {
 	model.AppErrorInit(i18n.T)
 
 	if s.seenPendingPostIdsCache, err = s.platform.CacheProvider().NewCache(&cache.CacheOptions{
+		Name: "seen_pending_post_ids",
 		Size: PendingPostIDsCacheSize,
 	}); err != nil {
 		return nil, errors.Wrap(err, "Unable to create pending post ids cache")
 	}
 	if s.openGraphDataCache, err = s.platform.CacheProvider().NewCache(&cache.CacheOptions{
+		Name: "opengraph_data",
 		Size: openGraphMetadataCacheSize,
 	}); err != nil {
 		return nil, errors.Wrap(err, "Unable to create opengraphdata cache")