Make tree find controls more discoverable

[Eskibear]

The Find control in tree view is very useful and highly requested by the community, but still a lot of people are not aware that we already have it in vscode. For the moment, to find something in tree view, you have to

• select an item to focus on the tree view
• press ctrl/cmd + F

To expose the feature more, can we add an option to show a button on view/title as below?

The behavior will look like below.

find-button.mp4

(I mimic the behavior by calling commands viewId.focus and list.find in above demo...but to add the buttons for multiple views, I have to do that repeatedly registering multiple commands).

As this is a generic feature for all tree views, I think it probably we can add a new option showFindControl in TreeViewOptions, just like how we add "showCollapseAll" button. WDYT?

vscode/src/vscode-dts/vscode.d.ts

Lines 10349 to 10352 in a7d49b0

	/**
	* Whether to show collapse all action or not.
	*/
	showCollapseAll?: boolean;

[isidorn]

Let's reopen this one and assign to backlog since we have been getting consistent feedback from extension authors that Find is not discoverable in the Custom Trees.

[LucaGabi]

Regarding #213055: please consider having an input text to filter like in this image (not only for the outline view but also for breadcrumbs) because this is in my opinion a very common action a developer dose to move easy around the code:

[RedCMD]

and allow the extension to prefill/modify the find/filter field