feat: Update `sign` tool v2 using new `catalyst-voting` crate | NPG-000

[Mr-Leshiy]

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Description

Updated sign tool with the new cli command v2 which generates the VoteCast jorm fragment using the new catalyst-voting crate https://github.com/input-output-hk/catalyst-libs/tree/main/rust/catalyst-voting.

This PR updates the interface of the sign cli tool to have a few command options:

• sign v1 ... original jorm implementation.
• sign v2 ... using new catalyst-voting crate.

The rest of the passing arguments remains the same

Closes #717