Refs: #69955

• anyOS: @Tyriar
• anyOS @isidorn

Complexity: 2

Quick open is now using the quick input widget that leverages our new tree widget. All quick open providers have been rewritten from scratch.

All of the existing commands for driving quick open have been preserved. Everything should work as before with some additional features as noted in the test plan.

Note: configure "workbench.quickOpen.closeOnFocusLost": false to make testing easier by keeping quick open opened even if you navigate somewhere else.

• verify the quick access provider term work as before and presents you with a list of terminals to focus on
• verify you can open new terminals
• verify you can kill existing terminals