lima: implement shader disk cache

lima: implement shader disk cache

Wire up disk cache routines and change fs and vs keys to use nir_sha1
instead of pointer to uncompiled shader to be able to reuse them for
disk cache.

Tested-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Reviewed-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9672>