Service threads

half_set: Resolve -Wmaybe-uninitialized warnings

maxwell_to_vk: Initialize usage variable in SurfaceFormat()

Silences a -Wmaybe-uninitialized warning

cmake: Enforce -Wuninitialized

video_core/texture_cache: Rewrite the texture cache

The current texture cache has several points that hurt maintainability
and performance. It's easy to break unrelated parts of the cache
when doing minor changes. The cache can easily forget valuable
information about the cached textures by CPU writes or simply by its
normal usage.The current texture cache has several points that hurt
maintainability and performance. It's easy to break unrelated parts
of the cache when doing minor changes. The cache can easily forget
valuable information about the cached textures by CPU writes or simply
by its normal usage.

This commit aims to address those issues.

Add support for building SPIR-V shaders from GLSL and generating headers
to include the text of those same GLSL shaders to consume from OpenGL.

k_priority_queue: Fix concepts use

- This is to allow service threads to defer destruction of themselves.

Add missing include of "core/hle/kernel/kernel.h"

- Avoids the need to have a large map of host to guest thread IDs.

externals: Update Dynarmic

Keeps yuzu up to date with the latest changes and introduces a change
needed for a lock-free optimization our side.

- For `std::same_as`, add missing include of `<concepts>`.

- For `std::convertible_to`, create a replacement in `common/concepts.h`
  and use that instead.

  This would also be found in `<concepts>`, but unlike `std::same_as`,
  `std::convertible_to` is not yet implemented in libc++, LLVM's STL
  implementation - not even in master.  (In fact, `std::same_as` is the
  *only* concept currently implemented.  For some reason.)

This is needed as the header invokes methods on KernelCore.

svc: demote SleepThread log to LOG_TRACE

This log is called often, and introduces a lot of noise when debug logging is enabled, making it difficult to see other debug logs.

input_common: process udp packets only for the correct pad

- Fixes a circular dependency which prevented threads from being released on shutdown.

- This makes it such that we can safely access service members from CoreTiming thread.

- This will be reset on initialization.