lists.sr.ht: add lists.sr.ht-webhooks

lists.sr.ht: Use srht-migrate for core migrations

Make local redis service optional

Add extra gunicorn args to *.init

Add --loglevel=info to lists.sr.ht-process

Fix indent on lists.sr.ht openrc files

Fix broken OpenRC files in lists.sr.ht APKBUILD

Add additional openrc services for lists.sr.ht

Add lists.sr.ht & its dependencies