feat(sign): Include event.ID in output

[bndw]

ID is calculated at the same time as the signature. Include both in the output.

Example usage:

noscl sign $(cat event.json)
- Signature:
-  - 22265ee70850324c45ce49a0599d86583a0b5bed82e4074fdc93f7d7fb8a1142f14783eb846be48a6d688988a4e203919ec0ccd3658fe742931a2f0ceaca728e
+ Id: 5065600f21bc5a1a0af492eb30aac9c9ad47c3df2a9bee0fc822eb3190dfda4b
+ Signature: 22265ee70850324c45ce49a0599d86583a0b5bed82e4074fdc93f7d7fb8a1142f14783eb846be48a6d688988a4e203919ec0ccd3658fe742931a2f0ceaca728e