Port ImageEditor: Local ShareX -> XerahS

Use this workflow whenever XerahS needs to catch up with the current ShareX.ImageEditor state from the local ShareX repo.

Source of truth

Do not clone ShareX again. The local ShareX checkout is the upstream reference:

Role	Path
Upstream ShareX repo	`C:\Users\liveu\source\repos\ShareX Team\ShareX`
Upstream source tree	`C:\Users\liveu\source\repos\ShareX Team\ShareX\ShareX.ImageEditor`
XerahS root	`C:\Users\liveu\source\repos\ShareX Team\XerahS`
XerahS ImageEditor repo	`C:\Users\liveu\source\repos\ShareX Team\XerahS\ShareX.ImageEditor`
XerahS ImageEditor code root	`C:\Users\liveu\source\repos\ShareX Team\XerahS\ShareX.ImageEditor\src\ShareX.ImageEditor`

Hardcoded local paths are intentional here. They make this workflow faster and more reliable.