persistent_settings - Preserve settings across bumps runs

get_value
set_value

Persist settings to disk.

Settings are stored in .venv/etc/bumps/KEY

As of this writing, only base_path is saved.

bumps.persistent_settings.get_value(key: str, default_value: str | None = None, application: str = 'bumps')

bumps.persistent_settings.set_value(key: str, value: str, application: str = 'bumps')