1. Description

On startup a Stack signer prints its version and public address.
These would be helpful for tracing for an sBTC signer as well.

2. Technical Details:

The signer might not be aware of its version, or the version used for Git tags might not match the one used in Cargo. That will need to change for this to be effective.

2.1 Acceptance Criteria:

• At startup, the signer prints its public key and version in the logs.