Epics list search and filter bar by author only
- First iteration of epics list search and filter bar.
- UI should be similar to the existing search and filter bar in issues list UI and other places in GitLab.
- For this iteration, the bar should be able to:
- Search for text in epic titles.
- Search for text in epic descriptions.
- Filter by epic author.
- There should also be the sort dropdown functionality to sort by:
- Created at
- Updated at
- API will be handled in separate issue: #4732
Labels are out of scope and implemented in the following issue: #4032