Add gitaly client support for FindRefsByOID

In gitaly!3947 (merged), we added a new RPC FindRefsByOID. The purpose of this RPC is to, as the name suggests, find refs by passing in an object id and some other optional parameters.

Some context for the need of this RPC is here (by @stanhu)

In https://gitlab.com/gitlab-com/gl-infra/production/-/issues/5662#note_697826180, we saw a lot of requests for `FindAllTags` that never completed. A project with JIRA enabled would attempt to call:

noteable.ref_names(project.repository).first

The FindAllTags triggered by ProcessCommitWorker comes from the JIRA integration. This happens when the commit message references a JIRA issue.

Stack trace

lib/gitlab/git/repository.rb:202:in `tags', 
lib/gitlab/git/repository.rb:513:in `refs_hash', 
lib/gitlab/git/commit.rb:439:in `refs', 
lib/gitlab/git/commit.rb:317:in `ref_names', 
app/models/commit.rb:343:in `method_missing', 
app/models/integrations/jira.rb:499:in `build_entity_meta', 
app/models/integrations/jira.rb:250:in `create_cross_reference_note', 
app/services/system_notes/issuables_service.rb:179:in `cross_reference', 
app/services/system_note_service.rb:217:in `cross_reference', 
app/models/concerns/mentionable.rb:150:in `block in create_cross_references!', 
app/models/concerns/mentionable.rb:149:in `each', 
app/models/concerns/mentionable.rb:149:in `create_cross_references!', 
app/workers/process_commit_worker.rb:50:in `process_commit_message', 
app/workers/process_commit_worker.rb:40:in `perform', 

In the JIRA payload, we want to include a ref name for the current commit so we do: noteable.ref_names(project.repository).first. But this method depends on Gitlab::Git::Repository#refs_hash, which fetches all tags and branches of the repository.

We probably need a new RPC to return N refs for a given OID.

We need to add client support in the gitaly client before we can take advantage of this RPC.