message: Added docs for Metrics plugin
diff: Exports profiling information to Influx DB.
  +## InfluxDB setup
  +
  +Install InfluxDB and create a database called "nwn". (You can call it what you like, but the database name needs to match in the next section.
  +
  +In the influxdb.conf file, in the "udp" section, enable the UDP port and set it's default database to ``nwn``
  +
  + [[udp]]
  + enabled = true
  + bind-address = ":8089"
  + database = "nwn"
  + # retention-policy = ""
  +
  ## Environment Variables
  | Variable Name | Type | Default Value |
  