Support Localization and Allow Keybinding for Collapse All in Left Dock

[eachann1024]

1. Does not support localization, at least leave an interface so the community can maintain it.
2. For example, in the left dock, there is a “Collapse All” option on right-click, but it cannot be set via shortcut keys.

[FloppyDisco]

When you say "left dock" which panel are you referring to? the Project Panel? That shows the file tree?