fix: add, rename and remove sensor

changes:
- Implement function to add, rename and remove sensors

pkg/storage/postgres/removeSensorByID.sql

@@ -0,0 +1,2 @@
+DELETE FROM sensors
+WHERE sensor_id = $1;

pkg/storage/postgres/removeSensorByName.sql

@@ -0,0 +1,2 @@
+DELETE FROM sensors
+WHERE sensor_name = $1;