feat: add neuron info command

[mducroux]

Add the neuron info command to display full neuron information:

NeuronInfo {
    neuronId: NeuronId;
    dissolveDelaySeconds: bigint;
    recentBallots: Array<BallotInfo>;
    neuronType: Option<NeuronType>;
    createdTimestampSeconds: bigint;
    state: NeuronState;
    joinedCommunityFundTimestampSeconds: Option<bigint>;
    retrievedAtTimestampSeconds: bigint;
    votingPower: bigint;
    ageSeconds: bigint;
    fullNeuron: Option<Neuron>;
    visibility: Option<NeuronVisibility>;
}

[mducroux]

Note: on the ledger wallet, when signing the transaction, the transaction type is: "List Own Neurons" which is incorrect. I am not sure how to fix that though.

[ielashi]

LGTM, thanks! I think it's ok that it shows "List Own Neurons". If we want to change that, that would be on Zondax's side.

[peterpeterparker]

Randomly spotted this PR, sharing if interesting. Feel free to ignore and not answer.