Suppport elevated train

[Wepf]

Many Weeks ago, I found out that the elevated station platform like from monorail plugin by @Lakan Haraya does not support train (a.k.a it must be ground station only or elevated station like in-game one). I always think why and I wanted theotown developers to add this feature to support elevated station plugin like from railroad expansion by @THEMAX and monorail platform from monorail plugin by @Lakan Haraya