[Feature Request] Add the "only files owned by you" filter.

[Avivhdr]

In our company monorepo, it is often that you need to review a PR that only some of its files are ones that owned by you, according to the CODEOWNER file.
When reviewing such a PR on github.com, there is a very useful function to filter the files in the PR to only see files that you own:
Adding this functionality would be an amazing addition to the vscode extension.