refactor(raylib): Move widgets to the widgets folder

[TheSecurityDev]

Summary and reason for change:

I've found the raylib code structure a bit random. There are several components that extend the Widget class (and some that don't but should) that aren't in the widgets folder, so I've moved them there and updated the imports (sorting as necessary).

Also I moved the Widget class into the base file of the widgets module to make imports a bit less verbose.

List of changes:

Moved files:

1. system/ui/lib/widget.py → system/ui/widgets/__init__.py
2. system/ui/lib/button.py → system/ui/widgets/button.py (not a Widget class but probably should be)
3. system/ui/lib/inputbox.py → system/ui/widgets/inputbox.py
4. system/ui/lib/label.py → system/ui/widgets/label.py (not a Widget class but probably should be)
5. system/ui/lib/list_view.py → system/ui/widgets/list_view.py
6. system/ui/lib/scroller.py → system/ui/widgets/scroller.py
7. system/ui/lib/toggle.py → system/ui/widgets/toggle.py

[sshane]

Yes, we're sort of doing things in stages or as we touch them. Things should use Widget if possible. Scroller should be a widget, but scroll panel should not since it doesn't deal with rendering and instead handles mouse clicks. Can we keep that in lib/?

Can you also see about making the classes you moved use Widget (and remove some code in the process by using the Widget class's helpers)?

[TheSecurityDev]

Scroller should be a widget, but scroll panel should not since it doesn't deal with rendering and instead handles mouse clicks. Can we keep that in lib/?

Sounds, good. I've updated it.

Can you also see about making the classes you moved use Widget (and remove some code in the process by using the Widget class's helpers)?

I'll see what I can do, but I also have a few other things I want to look at.

[sshane]

I see they're functions right now, that's okay to do in a separate PR. I started here: #35571

[TheSecurityDev]

I see they're functions right now, that's okay to do in a separate PR. I started here: #35571

I'm working on it!