* audout:u: Implement SetAudioOutVolume and GetAudioOutVolume
- Implementation of `audout:u` SetAudioOutVolume and GetAudioOutVolume (checked with RE).
- Add Get and Set for Volume into audio backends.
- Cleanup of all audio backends to follow the `IAalOutput` structure and .NET standard.
- Split OpenAL backend into 2 files for consistency.
* Address comments
* Fix the volume calculation
* Fix hwopus DecodeInterleaved implementation
Also implement new variants of this api.
This should fix#763
* Sample rate shouldn't be hardcoded
This fix issues while opening Pokémon Let's Go pause menu.
* Apply Ac_K's suggestion about EndianSwap
* Address gdkchan's comment
* Address Ac_k's comment
* Fix AudioRenderer implementation
According to RE:
- `GetAudioRendererWorkBufferSize` is updated and improved to support `REV7`
- `RequestUpdateAudioRenderer` is updated to `REV7` too
Should improve results on recent game and close#718 and #707
* Fix NodeStates.GetWorkBufferSize
* Use BitUtils instead of IntUtils
* Nits
* Refactoring HOS folder structure
Refactoring HOS folder structure:
- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close#766 and #753).
* Remove Types namespaces
