An Elixir atproto Jetstream V2 subscriber library

Unify logging #29

Merged jola.dev
targeting main from johanna/clean-up-logging
Merged opened by and assigned to jola.dev
targeting main from johanna/clean-up-logging

Establish a simple pattern for warning logs (all recoverable issues), which avoids interpolating into the error message to make it easier to search on

Commits 2

Add .credo.exs
Unify logging