Include Windesync-validate in the shootout

Windesync-validate is a freshly released test ROM for a recently discovered quirk in pre-GBC hardware that can insert a glitch pixel in the pixel FIFO under some circumstances. The output from the emulator should be compared to the included windesync-reference-sgb.png. Since this is a pre-GBC quirk, the test ROM should ideally run in DMG mode.

https://github.com/nitro2k01/little-things-gb/tree/main/windesync-validate