Implemented VoteToMute system enabling initiated voting for muting a player in chat. This includes creating new classes "ActiveVoteToMute", "VoteToMute", and "VoteToMuteStarter". The "VoteToMute" class handles the voting command logic, it allows players to vote on whether to mute other players. The code also adds a call to register this new command in the main VelocityChat class.