Quick access: commands

[bpasero]

Refs: #69955

• anyOS @mjbvz
• anyOS @rebornix

Complexity: 2

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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 commands appear when using the > picker and are searchable
• verify you see and can use editor commands only when a text editor is active in the background
• verify you see keybindings for commands that have keybindings
• verify you see the english variant of a command and can search for it when changing to a different language
• verify commands that you picked appear to the top as part of the commands history feature and are always sorted to appear first
• verify you can clear the commands history via "Clear Command History"
• verify you can configure workbench.commandPalette.preserveInput and the value you typed before accepting a command will be restored the next time you open that picker again