Support `InfoType_MesosphereCurrentProcess`

kernel: make current thread pointer thread local

Co-authored-by: liamwhite <liamwhite@users.noreply.github.com>

gdbstub: fix register pokes

KPageTable: Remove extraneous assert

kernel: wait for threads to stop on pause

Since start is always 0 and VAddr is unsigned, we can safely remove this assert.

ci/windows: Use Clang for MinGW builds

core/debugger: memory breakpoint support

kernel: fix some uses of disable_count

service: am: Stub PerformSystemButtonPressingIfInFocus

Used by Ring Fit Adventure

core: fix initialization in single core, sync GPU mode

Uses the MinGWClangCross toolchain script to build yuzu. Disables our
bundled SDL2 to use the system ones that have been modified to not use
`-mwindows`. Also set's `-e` to stop the script on an error (as opposed
to packaging nothing).

Uses LLVM's linker for linking yuzu. Adds -femulated-tls due to a
libstdc++ incompatibility between GCC and Clang in vulkan_common.

Facilitates what programs we need for cross-compiling to Windows from
Linux using LLVM's compilers. Based on MinGWCross

Improves readability.

common: param_package: Demote DEBUG to TRACE for getters

Make yuzu-cmd respect log_filter setting

Because logging infrastructure initializes before the loading of the
config, it reads the default setting for log_filter and ignores the one
set in config. To change log_filter after logging initialization some
additional calls need to be made.

Implement ExitProcess svc

Currently this just stops all the emulation
This works under assumption that only application will try to use
ExitProcess, with services not touching it
If application exits - it quite makes sense to end the emulation

kernel: implement KProcess suspension

bounded_threadsafe_queue: Use constexpr capacity and mask

While this is the primary change, we also:
- Remove the mpsc namespace and rename Queue to MPSCQueue
- Make Slot a private struct within MPSCQueue
- Remove the AlignedAllocator template argument, as we use std::allocator
- Replace instances of mask + 1 with capacity, and mask + 2 with capacity + 1

service: notifa: Implement most part of this service

kernel: notify debugger on break SVC

vk_compute_pass: Explicitly cast to VkAccessFlags

According to the standard, a narrowing conversion is an implicit conversion from an integer or unscoped enumeration type to an integer type that cannot represent all the values of the original type, except when the value is a literal or constant expression.
MSVC, unlike GCC or Clang, determines this to be a narrowing conversion despite the enumeration exclusively containing values that fit within the range of a 32 bit integer, emitting a warning since designated initializers prohibit narrowing conversions.
To solve this, explicitly cast to the type we are initializing.

yuzu: Make variable shadowing a compile-time error