Dependent on #1033

Is your feature request related to a problem? Please describe.
Need to integrate player tracking into metrics for aggregate dashboards.

Describe the solution you'd like
Metrics tracking and dashboards on:

• Game Server capacities
• Number of players per GameServer
• Empty player slots per GameServer
• Player connection length (how long they stay connected)
• Any others I can't think of right now.

Describe alternatives you've considered
Forcing users to do this on their own. A lot of work for what should be common metric requirements for a large part of our user base.

Additional context
Add any other context or screenshots about the feature request here.