[MTR3/4] Sydney metro & Sydney Trains

MTR4 (Beta 15~) Only vetsion. not compatible with MTR3

Json changed to mtr4 format

Model Optimization (Metro, A, B, M, T Set)

Remove T SET's inside PIDS

Remove G Set (not sure but it could be transfered to intercity RP)

Notice!

Passenger need to jump to take middle Carriage's upper deck. It's not a finished project yet.