Room and server live data and statistics

[SamuelWei]

Is your feature request related to a problem? Please describe.
For rooms and servers data about the usage should be constantly collected and stored for statistical purposes.

Describe the solution you'd like
A scheduled task should check the status of each server every minute and save the current amount of users, webcams, meetings, etc. as well as the status online/offline.

The scheduled task should also log the same details for all meetings and create a meeting history for all rooms.