mid ram and low ram buttons instad of commands

[sabi3293043]

I have a 6 GB GPU that works fine till 832x832 images but then I have to use the command mid ram to generate 1024x1024 and probably for an extreme example low ram for 2048x2048 (I never tried it). it would be awesome to have a toggle in the UI instead of going back and restarting everything to do mid and low ram images.