Getting server status

[EarthLord]

Now this always gives connected. If this is a thing to be done in the future, we can just comment it out with a TODO

nrf5x-firmware/codebase/AT_lib/sim800_oper.h

Line 183 in 7855dee

sim800_conn_status_t sim800_oper_get_server_status (uint32_t server_id);

[tejas-tj]

Okay, I'll also remove the SMS part. That's also something that is not implemented yet.