workbench: UTxO scaling + LMDB benchmarks, improved Nomad cluster handling

[mgmeier]

Description

This PR brings a set of new features to workbench and the Nomad backend, enabling UTxO scaling benchmarks and more.

• adds capability to benchmark UTxO-HD's on-disk solution (LMDB) - making use of a dedicated device for disk I/O on the hot code path
• adds new profile families faststartup and utxoscale for UTxO set growth benchmarking and exploration
• adds workbench profile vocabulary to target GHC RTS's heap limit
• new dedicated fast and latency profiles for Nomad, for minimal complete automation cycle (fast), and for creating a cluster network latency matrix (latency)
• better cluster error handling when the tx-generator service is involved, and for using an incompatible genesis format
• various quality-of-life improvements for the Nomad backend and workbench

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• 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

[fmaste]

LGTM