Remote mirrors were only being updated after pushes to branches, not
tags. This change consolidates the functionality into
Git::BaseHooksService so that both tags and branches will now update
remote mirrors.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/51240

Fixes #60425

This adds a limitation that we will try to create pipeline
for at most 4 first changes (branches and tags).

This does not affect processing of Pipelines for Merge Requests,
as each updated MR will have associated pipeline created.

Previously the raw push option Array was sent to Pipeline::Chain::Skip.

This commit updates this class (and the chain of classes that pass the
push option parameters from the API internal `post_receive` endpoint to
that class) to treat push options as a Hash of options parsed by
GitLab::PushOptions.

The GitLab::PushOptions class takes options like this:

    -o ci.skip -o merge_request.create -o merge_request.target=branch

and turns them into a Hash like this:

    {
      ci: {
        skip: true
      },
      merge_request: {
        create: true,
        target: 'branch'
      }
    }

This now how Pipeline::Chain::Skip is determining if the `ci.skip` push
option was used.