[Proposal] Source Control panel - filter and Tree view mode

[pmunin]

PROBLEM:
There is often a need to commit one particular folder with changes, but it's not easy to find it in Source Control panel when I have a lots of other changes

There should be a easy way to perform source control operations (e.g. staging changes) on a specific folder in a repository.

Suggested solution:
Here are the desired features sorted by the need:

• (must have) in Source Control panel: filtering list of changed files by full path
• (must have) in Source Control - tree view mode, that shows changed files as a tree with folders (instead of listview)
• (nice to have) in File Explorer: integrate source control actions (e.g. staging) on changed files and folders with those files into Context Menu (like in Solution Explorer in Visual Studio)

[joaomoreno]

• SCM: Support view filter #30199
• SCM: Show changes in tree-like format #14582

Please open a new issue for the third one. Please keep separate issues for separate feature requests/bugs.