Quake II RTX update for 30 March 2021

Hey, everyone! Today we're releasing v1.5, featuring the below features, fixed issues, and improvements.

New Features:

• Added support for ray tracing using the VK_KHR_ray_query extension API.
  _NOTE: This is an optional feature, and the two previously supported methods, VK_NV_ray_tracing and VK_KHR_ray_tracing_pipeline, are still supported. We recommend using NVIDIA Graphics Driver version 465 or newer, or AMD Radeon Software version 21.3.1 or newer._

Fixed issues:

• Fixed the crash that happened on some systems when the game is minimized: https://github.com/NVIDIA/Q2RTX/issues/103
• Fixed the invalid Vulkan API usage that happened in the bloom pass: https://github.com/NVIDIA/Q2RTX/issues/104
• Fixed the invalid barrier for an inter-queue resource transition: https://github.com/NVIDIA/Q2RTX/issues/105
• Fixed the out-of-bounds addressing of the framebuffer array: https://github.com/NVIDIA/Q2RTX/issues/107

Misc Improvements:

• Reduced the delay after resolution changes by avoiding re-initialization of the RT pipelines.
• Changed the memory type required for the UBO and transparency upload buffers to (HOST_VISIBLE | HOST_COHERENT).
• Improved logging around SLI initialization.