Linux Port WIP

[Mallchad]

Hiya, good day, I wanted to make a small Linux debugger and saw you open sourced a half decent debugger and thought I'd see how far I could get porting it as a hobby instead of torturing myself. I've done a big chunk now and saw you're doing little proddings on the Linux version so I thought I'd share what I have so far.

It's in an extremely unstable and tempremental state right now but a lot of it shouldn't be too stupid and I tried to comment as much findings as possible. So you can look over it for insight if you wish and whatever but **please be warned ** I have not had a chance to test hardly anything yet properly because I wanted some kind of minimum-working-set to play with.

I tried to look over some of the other pulls/issues for other people that worked on it and it seemed there was not much progress there so that's a shame... One had mostly just basic stub outs and bugfixes and the other had a minimal OpenGL API although I'm not super sure is the target you want long term because of how janky OpenGL device selection is.