hle: kernel: KThread: Improve Increment/Decrement RunningThreadCount.

yuzu: Add modifiers for keyboard

Improve FFmpeg cmake file

- Previously implementation was incorrect, and would occasionally underflow.

yuzu: Add volume hotkeys

* Fix compilation if CUDA_INCLUDE_DIRS is empty/contains multiple paths
* Pass CMAKE_{C,CXX}_COMPILER_LAUNCHER to ffmpeg compiler

input_common: Report battery for UDP controllers

Various fixes to HLE service thread management

service: apm: Stub ISession SetCpuOverclockEnabled

- But do not enter the priority queue, as otherwise they will be scheduled.
- Allows dummy threads to use guest synchronization primitives.

service: Update function tables

Switchbrew has the function names now.

Use Default Colorful theme by default outside of Windows

shader_recompiler: fix potential OOB access

On OSes with system-wide theming this allows yuzu to follow system style, regardless of its exact coloration, working well with both light and dark system themes. Dark /Colorful, on the other hand, forces dark theme regardless of user preferences set in system settings, making for a poor default.

Use Colorful variation to keep in line with icon style of patron-voted Dark Colorful.

Since we don't currently support CPU overclocking within the emulated system, this can be stubbed for now, like APM IsCpuOverclockEnabled.

- Used by Gravity Rider Zero

common: bit_util: Add IsPow2 helper function

- These are already tracked by kernel's registered_objects member.

- This does not appear to be necessary anymore.

- Considering is_thread_waiting is never set, so we can remove IsThreadWaiting.
- KThread::EndWait will take the scheduler lock, so we can remove the redundant lock.

- These are only used by host threads for locking and will never have a wait_queue.

- These are only used by host threads for locking.

- This will be used to ensure that we do not schedule dummy threads.

core/hid: Increment shake force

video_core: unbreak build with FFmpeg 5.0

src/video_core/command_classes/codecs/codec.cpp:177:16: error: assigning to 'AVCodec *' from 'const AVCodec *' discards qualifiers
    av_codec = avcodec_find_decoder(codec);
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~