/vote command

[Jurorno9]

so yeah ... we need to make a new command to allow a player to vote for a mindustry map in-game, along with infrastructure to track votes across map versions and players. Here is what I am thinking

• Update the Discord Bot to make a maps.json file, which keeps a list of all maps in current maps, along with a list previous filenames associated with the map
• When a server has a map update, download a copy of this JSON file for reference
• Store votes in a FishPlayer as a Record<filename, {vote:number, feedback:string}>
• When a player connects, update their map votes so the filename parameter matches the most recent file
• when a player votes, check if they have a vote of matching filename (update a vote if so, create a new vote if not)

Then getting the votes per each map ... that's some database stuff for balam to figure out