Refactoring to merge queries to share the same connection

[newhoggy]

Changelog

- description: |
    Refactoring to merge queries to share the same connection
  compatibility: no-api-changes
  type: feature

Context

Previously many of the commands were implemented in such a way as to open a new connection to the node for each query. These can cause multiple connections to opened and closed during the execution of a single command.

This change greatly reduces the number of connections used by having the queries share the same connection instead.

This PR is carefully split into may smaller commits that shows the refactoring changes incrementally. Each commit should compile on its own.

This draft PR confirms that integration tests still pass: IntersectMBO/cardano-node#5392

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• The change log section in the PR description has been filled in
• New tests are added if needed and existing tests are updated. These may include:
  • golden tests
  • property tests
  • roundtrip tests
  • integration tests
    See Runnings tests for more details
• 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

Note on CI

If your PR is from a fork, the necessary CI jobs won't trigger automatically for security reasons.
You will need to get someone with write privileges. Please contact IOG node developers to do this
for you.