Implement Cardano Transactions commands in the client binary

[jpraynaud]

Why

The Mithril client CLI should implement commands to certify a transaction list.

What

Implement the new commands and sub-commands in the Mithril client CLI.

How

• Add new commands:
  • transactions sets list command
  • transactions sets show <artifact_id> command? (if needed)
  • transactions sets latest command
  • transactions certify <tx1>,<tx2>,...,<txn> command
• Adapt devnet to create a script that post a transaction and keeps track of the transaction id
• Adapt end to end tests to validate a proof for a transaction list
• Export table output with certified/non-certified transactions in certify command
• Separate logs JSON from output JSON in certify command
• Make end to end test verify the list of certified transactions
• Update documentation