Debug: Add VSCode source-level debug example config; update QEMU FAT drive commands; other minor additional debug doc info

OpenCanopy: Document and enforce already existing requirement for SetDefault.icns width to match Selector.icns width
(prevent DEBUG Assert or incorrect render in RELEASE)

closes acidanthera/bugtracker#1673

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.