Add 8K support to Shotcut

Not going to cough up for a new a editor at this time, thankfully shotcut supports 8k. I found shotcut working perfectly fine on my new 8k monitor (tv), New massive hardware, tough and rough nvidia’s working and some 256gigs playing some games with 3d rendering.

Ok! I need to get a camera.

(I think I am just 4 years late to reply)