renderer_vulkan: Add the rest of case for TryConvertBorderColor

vk_shader: Implement ImageLoad

vulkan: add DXT23_SRGB

texture_cache: Avoid matches in 3D textures

video_core: memory_manager: Flush/invalidate asynchronously when possible.

Update httplib to 0.5.5

shader/texture: Allow 2D shadow arrays and simplify code

- Minor perf improvement.

maxwell_3d: Unify draw methods

gl_rasterizer: Use the least generic OpenGL draw function possible

shader_conversion: add conversion I2F for Short

vk_shader_decompiler: Fix vertex id and instance id

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Co-Authored-By: Mat M. <mathew1800@gmail.com>

query_cache: Implement a query cache and query 21 (samples passed)

GUI: Add aspect ratio dropdown

Fix CMake build errors for certain SDL2 installations