Metadata server

[johnalotoski]

Overview:

This PR provides a new testnet metadata server, cluster webserver, and other improvements.

Details:

• Adds a new metadata server
• Adds a new webserver for the cluster's static virtualhost needs
• Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo
• Adds systemd metrics monitoring to the cluster
• Resizes sanchonet machines to support the growing chain
• Completes migration of preprod from world
• Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes
• Updates Justfile for ERA_CMD demo support
• Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile
• Migrates book static code to playground from world, with refactor, cleanup and updates
• Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules