Add a sample layout for integer-scaled 240p content

[Wolfy76700]

Add a sample layout similar to what we have for Melee / Smash 64 with a small window for 240p integer-scaled content

On a 1080p stream, the size of the content would be 1280x960 (x4 integer scale)
On a 720p stream this would not be needed as a x3 integer scale would perfectly fit vertically