Queue system for client updates

[Vlad118]

Similar to BeamMP's "Automatic Queueing System" setting (configurable by user). Avoid client lagging when other clients on server spawn or make updates to vehicles.

• Turns cars into orange dot if waiting in queue
• "Box at the top showing how much is queued and when delay then an orange bar goes from left to right to fill out a semi transparent box. When it's full then it loads the cars. Only happens when the car is slow."

Reference:

[Vlad118]

Related: #48, #38