Support for saving and loading folder collapse state and alhpha inheritance in psd files

I made krita save and load folder collapsed state in psd files.

Also made saving alpha inherit layers as clipping layers in psd (and load clipping as alpha inherit). I know it's not the same thing and final image will probably look differently but for someone who works with psd files in krita it's still big quality of life thing.

Both features tested in krita and photoshop.