Fixes#62
Fixes rainfall unit inconsistency
Updates daily rain sensor to use consistent measurement units and corrects device class and suggested unit.
Fixes#62
Adds database path constant and data migration function
Defines DATABASE_PATH constant for database file location
Introduces migrate_data function to update unit of measurement in long statistics.
Adds sensor migration feature
Introduces a migration step for sensor statistics
Updates schema and translations to support migration
Fixes data migration from mm/d to mm
Refactoring webhook switching.
Added routing management to automaticly update coordinator to avoid restarting HA on configuration change or on new sensor discovery.
schizza