Version ATMS policies

We should address TODOs in the `TrustlessSidechain.Versioning.ScriptId` offchain module:

```
  | CommitteePlainEcdsaSecp256k1ATMSPolicy -- TODO: implement versioning for this policy (#686)
  | CommitteePlainSchnorrSecp256k1ATMSPolicy -- TODO: implement versioning for this policy (#686)
```

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IOG Jira: https://input-output.atlassian.net/browse/ETCM-6625