[Feature] Able to select all or certain elements hotkey

[PerfectlyFineCode]

Feature/enhancement description:
I'd love a feature which allows you to select all or specific elements and perform a certain action.
Such as duplicating, deleting, etc.

Hotkey
Select all - CTRL + A (which is the standard hotkey to select all).
Mouse Click on an element - Select that specific element.

Example

Reference: Microsoft Whiteboard