Identity revocation

[orthecreedence]

Need the ability to create (using the alpha keypair) a revocation for an entire identity that can be published in the identity's "space" in whatever DHT is used that immediately negates any future use of that identity.

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• Create RevokeIdentityV1 transaction
• Implement in policy system
• Implement in identity (new bool field, revoked)
  • Prohibits further changes
  • Update identity tests to check for read-only status
• Check revocation when saving transactions to identity

[orthecreedence]

Note that this can just be a dumb transaction now that we have a DAG