Add ability to capture screen & copy text

[MCJack123]

Is your feature request related to a problem? Please describe.
It's hard to copy text from the terminal.

Describe the solution you'd like
Add a button to freeze the screen, which turns mouse input into text selection. Holding Alt will create a rectangular copy region, while not having it will just select text horizontally.

Describe alternatives you've considered
N/A

Additional context
https://discord.com/channels/477910221872824320/477911902152949771/1296248168798883841