Fixes https://github.com/acidanthera/bugtracker/issues/2067

BootEntryProtocol: Add system action and hotkey support; implement Reset NVRAM and Toggle SIP as drivers

closes #312
closes acidanthera/bugtracker#1899

AudioDxe: Improve documentation and logging of AudioOutMask, and change default value to 'output all'

 - DisconnectHda
 - AudioOutRange
 - Cirrus Logic (Apple) and QEMU fixes
 - Other fixes

closes acidanthera/bugtracker#1717

To allow kb input to reliably reach ConIn GUI apps (e.g. Windows BitLocker) even when an AppleEvent key handler (e.g. CrScreenshotDxe.efi) is active

On MP3,1 with UGA there is a dangling UGA protocol with 1024x768
resolution on ConOut, which points nowhere when no Apple GPU is
installed. Installing GOP on it results in black screen due to
the wrong GOP being chosen for ConOut.

The workaround is not to install the GOP without AppleFramebufferInfo
but this is only applicable to Apple machines, thus the option.

This quirk provides correct TSC and FSB to the kernel, as well as disable topology validation checks. Both of these are required for Hyper-V.

references acidanthera/bugtracker#1280

 - Revert to simpler CustomDelays bool setting (avoid user errors)
 - Update docs to clarify correct use of key repeat settings on KeySupport AMI vs KeySupport V1/V2 vs non-KeySupport
 - Update PointerSpeedMul failsafe to OEM 1
 - Update key delay failsafes to OEM 50, 5