Add a button to create a new sensor

[glaslos]

Button opens modal with form for sensor name.
Create a new backend endpoint POST /sensors to create new sensors.
Sensor names are unique per user, not globally.
Confirming form creates a new sensor entry in the database with the chosen name.

[Tushar-kalsi]

Hi @glaslos

For backend :
Can you validate if my approach for adding Endpoint /sensors :

1. Create endpoint /sensors in routes.go file . use Cors ,Bearer middleware .
2. Make a sensor.go file in backend/repos directory .
3. Add Sensor Repo , make a function for creating sensor table .here
4. Create handler function for post request handler in handler.go file .

[glaslos]

@Tushar-kalsi sounds good, have a look at #92