x11: clipboard; wayland: unmarshaling, protocol

[levovix0]

No description provided.

[guzba]

Hello, great to see more work here!

I believe Windows is at a good enough point for me get Mac caught up again and finally focus on Linux.

I order to make the Linux implementation learning and review more manageable for me, and to ensure quick review and turn-around, I am going to set up a fresh empty x11 platform file with just the API stubs. From there, I'd like to work with you to discuss and bring over the implementations in parts. This will be slower but I really care that I understand and could maintain the implementation going forward.

It should go pretty quick once we are rolling, but I do ask for your patience at first while we work through the first few commits.

Merging this so we have it!

[guzba]

Going to talk through the stub idea with treeform #28
Assuming we merge that, I would like to start with just opening a basic window with an opengl context. You left some notes in the current x11 impl I want to start by figuring out.

[guzba]

(Obviously you are not obligated to do any of this to be clear, but your contributions are appreciated and it would be great to work with you to really understand the linux code.)