Cardano Updates

This PR fixes a couple of different issues found around pool data.

1. Issue mentioned in #381 fixed by correct descending ordering of registered_tx_id column for pool_info_cache insertion.
2. pool_calidus_keys was missing an ordering on pool_info_cache, needs to grab latest entry from this cache table.
3. pool_info need a distinct select due to a DBSync bug not yet having a bug fix deployed. Can be removed later when fix is deployed but doesn't cause any negative impact even after fix is applied.
https://github.com/IntersectMBO/cardano-db-sync/issues/1986

## Description
Fix optional filtering on policy and name to use indexed columns.
PostgREST horizontal filtering cant do this on resulting encoded values.

## Which issue it fixes?
Issue reported on Discord bugs channel from $papagoose

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Co-authored-by: Dostrelith <[email protected]>

## Description
Old pushed file seem to be a duplicate of tx_cbor.sql

Needs docs update and RPC verified but at least the function now does
what its supposed to. There might be some performance issues through
postgrest call if I remember correctly.

## Which issue it fixes?
#378

Old pushed file seem to be a duplicate of tx_cbor.sql

Needs docs update and RPC verified but at least the function now does what its supposed to.
There might be some performance issues through postgrest call if I remember correctly.