arm_dynarmic_32: Fix implicit conversion error in SetTPIDR_EL0

On MSVC builds we treat conversion warnings as errors.

gl_device: Reserve 4 image bindings for fragment stage

arm_dynarmic: CP15 changes

xbyak_abi: Cleanup

macro_jit_x64: Cleanup

qt_themes: remove unknown qss property from dark theme

* externals: Revert to libressl, as build is broken with find_package(OpenSLL).

* fixup! externals: Revert to libressl, as build is broken with find_package(OpenSLL).

* fixup! externals: Revert to libressl, as build is broken with find_package(OpenSLL).

gl_arb_decompiler: Implement an assembly shader decompiler

yuzu/frontend: Remove internal resolution option

Due to the limitation of GL_MAX_IMAGE_UNITS being low (8) on Intel's and Nvidia's proprietary drivers, we have to reserve an appropriate amount of image bindings for each of the stages. So far games have been observed to use 4 image bindings on the fragment stage (Kirby Star Allies) and 1 on the vertex stage (TWD series).
No games thus far in my limited testing used more than 4 images concurrently and across all currently active programs.
This fixes shader compilation errors on Kirby Star Allies on OpenGL (GLSL/GLASM)

CMakeLists: xbyak comes before dynarmic

buffer_cache: Avoid passing references of shared pointers and misc style changes

Not required, as PARAMETERS can just be incremented directly.

All registers are now callee-save registers.

RBX and RBP selected for STATE and RESULT because these are most commonly accessed; this is to avoid the REX prefix.
RBP not used for STATE because there are some SIB restrictions, RBX emits smaller code.