WIP: Update metrics

[ScottyPoi]

Refactor of Prometheus metrics in ultralight

1. Helper functions to create metrics
   • interface MetricParam
     • parameters for metric
       • metric type
       • name
       • help (description)
   • createMetric
     • helper function to create metric
   • createMetrics
     • helper function to generate list of metrics
2. Dynamic metrics setup for individual networks
   • setupMetrics(networks)
     • added networks: NetworkId[] parameter to setupMetrics
     • method will dynamically create metrics for each active network
3. Revised list of metrics
   • peers
   • dbSize
   • TODO...(rest of metrics)