Improve Chain Indexer Performance

[jhbertra]

• Add marlowe-chain-copy executable
• Improve throughput of marlowe-chain-indexer
• Remove asset table and inline policy IDs and token names in assetOut and assetMint tables
• Extract database row mapping functionality to reusable modules delineated by era.

How this was tested:

• tables exported to csv files from qa preprod database using COPY
• tables exported to csv files from local database using COPY
• csv files diffed.
• Issues identified and fixed using this technique:
  • erroneous use of base58 encoding of bootstrap (byron) addresses
  • inconsistent CBOR encoding of transaction metadata

Pre-submit checklist:

• Branch
  • Tests are provided (if possible - see comment)
  • Test report is updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
  • Relevant tickets are mentioned in commit messages
  • Formatting, PNG optimization, etc. are updated
  • Operables are updated with changes to executable command line options.
  • Deploy charts updated with changes to operables.
• PR
  • Self-reviewed the diff
  • Useful pull request description
    • Review required
    • Substantial changes to code, test, or documentation
    • Change made to Marlowe validator (@bwbush and @palas must be included as reviewers)
    • Review not required
    • Minor changes to non-critical code, documentation, nix derivations, configuration files, or scripts
    • Formatting, spelling, grammar, or reorganization
  • Reviewer requested