Cardano Updates

+ Implement them in the In memory test store.

Two type one without and one with the list of transactions hashes of the
block (similar to Signer with/wo stakes).

Refactors the index monitoring system to check pg_index system catalog
for index validity and readiness (indisvalid and indisready flags) instead
of monitoring active index creation via pg_stat_progress_create_index.

Key changes:
- PostgreSQLIndexCreationMonitor now queries pg_index joined with pg_class
- Checks that ALL required indices exist and have indisvalid=true and indisready=true
- Required indices list added to application.yaml (cardano.rosetta.rosetta-indexes)
- Only transitions to LIVE state when all 11 required indices are valid and ready

This ensures proper state machine flow: SYNCING -> APPLYING_INDEXES -> LIVE
and prevents premature transition to LIVE state before external watchdog
completes applying the optional performance indices.

The previous approach could result in SYNCING -> LIVE -> APPLYING_INDEXES -> LIVE
when indices were already applied before the monitoring check ran.

Bump ouroboros-network to 0.21.6