Write Python script to simulate robot interface

[Raghav-B]

Subtask of #1

You don't have to write any webrtc stuff. We are purely testing the signalling server.

Use Python websockets module to simulate the following functionality from the robot

• Similar to Write Python script to simulate client interface #2 , add whichever functionality the robot does with the signalling server (such as robot-login, answer etc into the Python script)

Spawn threads to simulate multiple robots.