add amf patches

[ReenigneArcher]

Description

• add amf patches from original sunshine-prebuilt

Screenshot

Issues Fixed or Closed

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (changes to documentation)
• Repository update (changes to repository files)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated the in code docstring/documentation-blocks for new or existing methods/components

[psyke83]

I've been doing some tests without this patch set. While amfenc does work, there are intermittent cases in which moonlight-qt will suddenly stop updating video (last image stays frozen), and sometimes will connect to a black screen, usually when a game is running in fullscreen. So, the IDR patch is probably still needed, but I'm not sure if the colour patch is necessary or what it changes.

I've also tested unpatched ffmpeg against LizardByte/Sunshine#516, and it doesn't resolve the issues mentioned above.