Cardano Updates

...from Cardano.Ledger.Api.Governance and update all other uses of
deprecated functions in the rest of the packages.

* Deprecate
  - constitutionScriptL IFO constitutionGuardrailsScriptHashL
  - InvalidPolicyHash IFO InvalidGuardrailsScriptHash
  - checkPolicy IFO checkGuardrailsScriptHash
* Rename gePolicy to geGuardrailsScriptHash

This is to avoid confusion with multiasset "policy" ids.

...from Cardano.Ledger.Api.Governance and update all other uses of
deprecated functions in the rest of the packages.

Deprecate InvalidPolicyHash IFO InvalidGuardrailsScriptHash.

This is to avoid confusion with multiasset "policy" ids.

* Deprecate
  - constitutionScriptL IFO constitutionGuardrailsScriptHashL
  - InvalidPolicyHash IFO InvalidGuardrailsScriptHash
  - checkPolicy IFO checkGuardrailsScriptHash
* Rename gePolicy to geGuardrailsScriptHash

This is to avoid any confusion with multiasset "policy" ids.

CDDL typeclasses with implicit naming

We deliberately hide (=:=) and (=:~) so that we don't accidentally use
those in the eras.