* use Array.Empty() where instead of allocating new zero-length arrays

* structure for loops in a way that the JIT will elide array/Span bounds checking

* avoiding function calls in for loop condition tests

* avoid LINQ in a hot path

* conform with code style

* fix mistake in GetNextWaitingObject()

* fix GetNextWaitingObject() possibility of returning null if all list items have TimePoint == long.MaxValue

* make GetNextWaitingObject() behave FIFO behavior for multiple items with the same TimePoint

This is the first commit of a series of reformat around the codebase as
discussed internally some weeks ago.

This project being one that isn't touched that much, it shouldn't cause
conflict with any opened PRs.

* Ryujinx.Audio: Remove BOM from files

* misc: Relicense Ryujinx.Audio under the terms of the MIT license

With the approvals of all the Ryujinx.Audio contributors, this commit
changes Ryujinx.Audio license from LGPLv3 to MIT.

* Add the ability to toggle mute in the status bar.

* Add the ability to toggle mute in the status bar.

* Formatting fixes

* Add hotkey (F2) to mute

* Add default hotkey to config.json

* Add ability to change volume via slider.

* Fix Headless

* Fix SDL2 Problem : Credits to d3xMachina

* Remove unnecessary work

* Address gdk comments

* Toggling with Hotkey now properly restores volume to original level.

* Toggling with Hotkey now properly restores volume to original level.

* Update UI to show Volume % instead of Muted/Unmuted

* Clean up the volume ui a bit.

* Undo unintentionally committed code.

* Implement AudRen Support

* Restore intiial volume level in function definition.

* Finalize UI

* Finalize UI

* Use clamp for bounds check

* Use Math.Clamp for volume in soundio

* Address comments by gdkchan

* Address remaining comments

* Fix missing semicolon

* Address remaining gdkchan comment

* Fix comment

* Change /* to //

* Allow volume slider to change volume immediately.
Also force label text to cast to int to prevent decimals from showing in status bar

* Remove blank line

* Undo setting of volume level when "Cancel" is pressed.

* Fix allignment for settings window code

* Haydn: Part 1

Based on my reverse of audio 11.0.0.

As always, core implementation under LGPLv3 for the same reasons as for Amadeus.

This place the bases of a more flexible audio system while making audout & audin accurate.

This have the following improvements:
- Complete reimplementation of audout and audin.
- Audin currently only have a dummy backend.
- Dramatically reduce CPU usage by up to 50% in common cases (SoundIO and OpenAL).
- Audio Renderer now can output to 5.1 devices when supported.
- Audio Renderer init its backend on demand instead of keeping two up all the time.
- All backends implementation are now in their own project.
- Ryujinx.Audio.Renderer was renamed Ryujinx.Audio and was refactored because of this.

As a note, games having issues with OpenAL haven't improved and will not
because of OpenAL design (stopping when buffers finish playing causing
possible audio "pops" when buffers are very small).

* Update for latest hexkyz's edits on Switchbrew

* audren: Rollback channel configuration changes

* Address gdkchan's comments

* Fix typo in OpenAL backend driver

* Address last comments

* Fix a nit

* Address gdkchan's comments