cardano-tracer: Allow switching EKG service between different nodes.

[Icelandjack]

Description

• Main issue: EKG servers cannot be restarted with the same store. To work around this limitation a new type (RouteDictionary) is defined that associates a store to each of the (slugified) node names.
  • This creates a dynamic routing to EKG stores of all connected nodes.
• Phase out HsOpenSSL: replace snap webserver with wai/warp.
• The hasEKG field of TracerEnv matches hasPrometheus in defining a single port (endpoint).
• (for optional RTView) Disable SSL/https connections. Force snap-server dependency to build with -flag -openssl.
• JSON responses when listing connected nodes for Prometheus and EKG Monitoring.
• Consistency check for redundant port values in the config.

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated.
• Any changes are noted in the CHANGELOG.md for affected package
• The version bounds in .cabal files are updated
• CI passes. See note on CI. The following CI checks are required:
  • Code is linted with hlint. See .github/workflows/check-hlint.yml to get the hlint version
  • Code is formatted with stylish-haskell. See .github/workflows/stylish-haskell.yml to get the stylish-haskell version
  • Code builds on Linux, MacOS and Windows for ghc-8.10.7 and ghc-9.2.7
• Self-reviewed the diff

[mgmeier]

Great work, thank you so much @Icelandjack !