Pound emulator

Pound is likely the first real contendor as a Switch 2 emulator.

Progrss will start on the CPU as it is nearly identical to Switch 1, and later on smoothing out the differences between the two hardware.

Users will need to dump their own firmware or get it from big N's update servers to use Pound.

Pound will likely use some code from other Switch 1 emulators such as Yuzu and will specify which ones in the documentation.