LEAP API for Cut, Copy, Paste, and Select All

[jellyfish-linden]

Being specific these are the payloads I want:

1. Cut (this should largely function the same as hitting Ctrl/CMD+X on an element)

LLWindow
op="cut"

//optional
path=element_path

2. Copy (this should largely function the same as hitting Ctrl/CMD+C on an element)

LLWindow
op="copy"

//optional
path=element_path

3. Paste (this should largely function the same as hitting Ctrl/CMD+V on an element)

LLWindow
op="paste"

//optional
path=element_path

4. Select All (this should largely function the same as hitting Ctrl/CMD+A on an element)

LLWindow
op="selectAll"

//optional
path=element_path

Test Plan

Use the leap API to call out to any of these operations on LLWindow. outleap-repl can be used to validate as well.

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[Dan-Linden]

Check with P0 branch and see if it's already there.