Add copy button to toast notification

[jaydensipe]

Implements and closes godotengine/godot-proposals#11067 Bugsquad edit: use the GitHub magic words to link the proposal and auto-close when merged :)

Preview (edited)

Screen.Recording.2024-11-03.133504.mp4

[jaydensipe]

Rebased with master.

[jaydensipe]

Had a thought after watching passivestar's twitter video about the toasts, he's using them for quick tool notifications instead of errors, do we think it might be a good idea to only show the copy button if the toast has a severity of warning/error? @KoBeWi @passivestar thoughts? Or have a way to specify if you want your push_toast to include a copy button?

[passivestar]

@jaydensipe There are probably some cases where you'd want the copy button in regular message notifications if there's a script that shows you some interesting info like some scene stats and you don't want to outright add DisplayServer.clipboard_set() to it yourself. It's probably not something you'd want often, but I think it's fine if all of them have the button, it's a small button after all and it might not be worth to bloat the API because of it

What I think might be interesting to consider in the future though is persistent toasts with action buttons:

[jaydensipe]

@passivestar Awesome, yeah that makes sense not to bloat the API for that, thanks for the input man. And yes buttons on the toasts would be sick