Hotkeys - Add CTRL/ALT+F to outliner and properties editor to toggle outliner search focus, add to tooltip

[Draise14]

We have search exposed already, but there also a hotkey for the same UX (Blender operator). We can remove the Bforartists operator and use the Blender one, then a user can assign hotkey there if they want - but there is hidden functionality of starting the search focus by hotkey.

We should add this to our default hotkeys then add that information into the tooltip.

• Properties Editor search filter
• Outliner Search filter

This is a feature that's completely undiscoverable....

Details

SHA-1: f5fdda7

• UI: Outliner Ctrl-F To Start Filter

New operator OUTLINER_OT_start_filter bound to Ctrl-F to move keyboard
focus to the Outliner search filter box. And OUTLINER_OT_clear_filter
bound to Alt-F to clear the search box. Both similar to Properties.

Pull Request: https://projects.blender.org/blender/blender/pulls/122126