Add filter\search bar for branches

[sgabenov]

Feature Description

I want to have additional search\filter bar on the "brances" page. So when you enter text, the filter will only show branches that contains such text in branch name.

the problem: i have 100+ branches in my repo. I did a PR long time ago and want to delete this PR and corresponding branch for it. If i go to PR page, i can see a linked branch for this PR and have a button to delete current PR. But on the branch page, that is opened from PR, i do not have a "delete" button, so i have to go to the "branches" page whare i can find and delete the corresponding branch after PR is deleted. But i need to click on multiple pages of existing branches to find the branch i want to delete. Feels like a lot of manual work to do.

Screenshots

[silverwind]

Agree, we need a search box there.

[lunny]

I think this depends on #22743. Except keywords, we also could have other filters or sorts.

[ruess]

Just realized there at least is a branch search by going to the general <>Code tab and then clicking the branch change dropdown. This will at least get me by until this feature is added, as I also have way to many branches right now :)