testing/crust: Promote to community
postmarketOS uses its own crust package as a makedepends of our u-boot package for the PinePhone. It is redundant with the one in aports, but we have to have it because we consider the PinePhone to be a "main" device, so it cannot have dependencies that are unavailable in stable Alpine.
testing/crust has been around since 2021-10, and I can confirm the latest v0.6 works fine on the PinePhone at least. Could it be promoted to community?
cc @mps