Fixed aiPanel not resizing

Fixed ncnn-only models not working with esrgan-ncnn

Model selection tree improvements

Added running-out-of-archive warning

Split cache option for batch, model tree auto-expand option

Fixed fractional frame rates

Cache tile size for video upscaling (joey's)

Whitelisted WEBM and AVI for video upscaling

Added button to cancel the current upscale (kill esrgan process)

More NCNN GUI improvements/fixes