sr.ht/py3-celery: bump pkgrel

sr.ht/py3-celery: add importlib-metadata dependency

sr.ht/py3-celery: upgrade to 4.4.0

Update all dependency packages

Update py3-celery to 4.2, fix deps

Set all pkgrels to zero

Move into subdir for abuild reasons

Fix celery and finish builds.sr.ht package

Add builds.sr.ht package