* extension now working
* fix diff editor title disappearing and remove border from source and target name boxes
* redoing a bunch of stuff that disappeared after rebasing
* add images and add to extensions.ts
* moving a few changes to the right place after rebase
* formatting
* update toolbar svgs
* addressing comments
* add return types
* Adding PR comments
* Adding light and dark theme icons
* Fixing the diff editor title for dark theme
