Fixes#1574
BREAKING CHANGE: The `general` section in the config schema has changed: the `general.base_*`, `general.protocol` and `general.force_ssl` configuration fields have been replaced with a single `general.public_url` field. Be sure to use a valid url with the new configuration field.
* feat: create libretime_shared package
- We don't use pydantic.BaseSettings because of some
incompatble loading behavior.
* fix: whitelist pydantic in pylintrc
* docs: update to new BaseConfig behavior
* docs: change confusing config filepath