dispatch.sr.ht: upgrade to 0.15.8

*.sr.ht: move nginx files

dispatch.sr.ht-nginx: add sr.ht-nginx dependency

dispatch.sr.ht: add -nginx subpackage

dispatch.sr.ht: correct error in initd

dispatch.sr.ht: overhaul init files

Add default non-conflicting ports

Based off of config.ini debug-port values

Fix various user creation bugs and inconsistencies

- ensure that all users are added to their corresponding groups
- replace listssrht user with lists
- ensure that the git user creates its homedir
- ensure that adduser args are in same order across all apks

dispatch.sr.ht: upgrade to 0.13.2

Fix section name in dispatch.sr.ht migration

Add core.sr.ht migrations to dispatch.sr.ht

Add py3-cryptography to py3-srht deps

Make local redis service optional

dispatch.sr.ht: Fix post-install/post-upgrade

Add dispatch.sr.ht APKBUILD