Enable `GET /v2/<name>/tags/list` to filter by media type
In order to support gitlab#38047 we need to enable filtering media type so that rails can populate lists of container images and helm charts efficiently.
Once paginated requests are implemented #13 (closed), this will prevent N+1 requests: gitlab#118601 (comment 261669191)
This was originally discussed in gitlab#118601 (closed)
Edited by Hayley Swimelar