Replace DirectX Renderer w OpenGL

[Richard-L]

As dash explained a bigger feat, but useful to log as a group issue.

• For cross platform compatibility
• For parity w TR1X
• For a handful of issues related to this:
  • "Failed to create device" when toggling fullscreen #1842
  • Fullscreen mode resizes all other open windows #1643
  • OG bug: Fullscreen issue #1645
  • Support for non 4:3 aspects #1647
  • Bad RHW value causes graphics errors on Intel GPUs #1574
  • FMVs have bad window position, size, and focus state #1843
  • Windows' UI scaling mis-scales TR2X and causes FMV issues #1845