vim: Add vim counts and vim shortcuts to project_panel (#36653)

Closes #10930 
Closes #11353

Release Notes:

- Adds commands to project_panel
  - `ctrl-u` scrolls the project_panel up half of the visible entries
  - `ctrl-d` scrolls the project_panel down half of the visible entries
  - `z z` scrolls current selection to center of window
  - `z t`  scrolls current selection to top of window
  - `z b` scrolls current selection to bottom of window
  - `{num} j` and `{num} k` now move up and  down with a count
9c60bc3837AidanV committed on 9/29/2025, 9:53:59 PM· committed by GitHubparentfbb4dcf
6 files changedLine totals unavailable