tables

- [x]  measurement_recordings (sensor, topic, timestamp, measurement_label, measurement_value)
- [x]  sensors
- [x]  topics
- [x]  measurment_labels

other things to do:

- [ ] update access client(mqtt)
- [ ] update message generation functionality in sensor-hub drivers
- [ ] REST api to access db
- [ ] Visualiztion server to serve dashboard
- [ ] Determine best way to parse mqtt messages into database.
    - 1 mqtt client just hands complete message packet in and parsing is handled on database model side of things
    - 2 mqtt client parses message packet and runs seperate db update for each message segment.

- [x] related to above, create read-logger function
- [x] main function to actually run the thing
- [x] implement update functions to add new entries to Topic, Sensor, and MeasurementKind tables.
- [x] change automation on sensor hub setup files to implement this database.
- [ ] update mqtt_logger.service to use new `mqtt_logger` library
- [x] modify add_measurment_record to add_measurement_records, which will all writing an arbitrary number of measurements from the same mqtt packet
- [x] wire mqtt logger client to use "add_measurement_records"
- [ ] Modify mqtt_client playbook to copy over new `mqtt_logger` library