refactor: outside vehicles tracking vehicle id

[Manason]

• merged some functions instead of multiple events/callback occurring when a vehicle is parked
• moved the actual entity deletion to the server side
• restructured and renamed checkPlayers to kickOutPeds, although I wonder if this is even needed.
• adding server side state bag to vehicles to store the vehicle id. This is the unique database column identifying owned vehicles. Switching the ownedVehicles checker to use this as the id instead of plate. Future PRs will shift away from using plate as an identifier for a vehicle, since a plate could change. We should be using vehicle id as the primary id of vehicles.