♻️ Voter: Added agentId in voter & new parameters to doRequestNewBallotand doRequestVote functions

Added "agentId" parameter to the NewRestClientAgent constructor to associate an ID with the agent. Modified the doRequestNewBallot function to accept additional parameters, including "rule," "deadline," "votersIds," "alts," and "tieBreak," for more flexible ballot creation. Enhanced the doRequestVote function by adding the "ballotId" and "prefs" parameters, enabling more precise vote submissions.