[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