investigate user capacity of the collab feature

[JosiasAurel]

Investigate the number of simultaneous rooms and maximum number of users per room before the sprig collab feature breaks. This should help us put a cap on the max number of users we allow per collab room.

Things we want to investigate

• max. number of collab rooms
• max. number of users per collab room.
• max. capacity of signaling server