Consider adding a way to (optionally) track tokens

[magmax]

Tracking tokens in order to monitor when they get old and should be renewed, or when they stop to be used and could be destroyed, is a must on security departments.

So, it would be great to be able to get such stats by using Prometheus, but requires a service to expose that data.

This applies for user and automation tokens.

Minimum data required:

• type (automation/user)
• creation timestamp
• last used timestamp