GitLab

Fixes #27
The minor drawback is that it doesn't take the horizontal text limit into account when scrolling to the right.
One can keep scrolling WAAAAAY after all chars have disappeared to the left.

- Change file structure to separate code from data and 3rdparty binaries.
- Move from make and VS solutions to cmake build system.

also clear up keyword/type/etc lists

special thanks to
https://github.com/baldurk/renderdoc/blob/master/renderdocui/Resources/hlsl.xml
for a nice collection of HLSL keywords!

(thanks to glslsandbox for inspiration)

(how did this even work?!)