protocol parameters: do not depend on API encoding anymore

[smelc]

Following-up on

• query protocol-parameters: use ledger JSON encoding, not API one #758, and
• Add golden tests to ProtocolParameters serialization cardano-api#457

We want to completely get rid of the JSON encoding of API's ProtocolParameters

Related: IntersectMBO/cardano-api#384

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[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 120 days.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 120 days.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 120 days.