*.sr.ht: Enable prometheus multiprocessing mode

todo.sr.ht: overhaul init files

Add default non-conflicting ports

Based off of config.ini debug-port values

todo.sr.ht: fix gunicorn invocation in init script

todo.sr.ht: normalize init scripts

Make local redis service optional

Add extra gunicorn args to *.init

Fix more indentation issues

Initial pass on todo.sr.ht package