Move diesel as a workspace dependency

kairo-common/src/lib.rs

@@ -20,7 +20,7 @@ pub type Point = types::point::Point;
 pub type MAC = types::mac::MAC;
 
 // DB models: for SQL with Diesel and InfluxDB and influxdb-derive
-mod schema;
+pub mod schema;
 mod models {
     pub mod antenna;
     pub mod beacon_measure;