Add Release filter to MR list app

What does this MR do and why?

Implements Add release filter to Vue merge request list app (#442919 - closed).

The filter itself might produce wrongs results because of a backend issue.

Screenshots or screen recordings

Screen_Recording_2024-08-19_at_13.04.01

How to set up and validate locally

1. Enable vue_merge_request_list feature flag
2. Go to the project's merge requests list
3. Select 'Releases' in search bar
4. Select a release
5. The list should update corresponding to your search query