denormalize client

changed the database schema to rely on a central device table instead of having each table store the client_id / mac.

sql contains a migration script for existing data, please note this relies on ALTER TABLE DROP COLUMN, which is only supported in fairly recent sqlite versions (? 3.35+ ??)

Telemetry

added support for receving Telemetry data from devices

v0.2.1

• reconnect functionality server
• reconnect functionality db

v0.1

Initial working version.