[MTR3] British Rail Classes 507 & 508

1. Added the missing handrails on the front of the train.
2. Multi-working compatible variants!

British Rail Class 507 & 508 V1.7.1 is now released, which involves fixing typos with "AIVR" camera, and fix of luggage rack position on the BDMSO car.

Changes

1. Added underfloor equipment for both Classes 507 and 508
2. New bogie, car end and floor textures
3. Added Car numbers
4. Added Luggage racks
5. Lots of little texture fix

1. Added Class 507! (Actually they looked almost the same)
2. Overhaul! (sort of.) Added some details on the front, used a new texture for the front (from 507001), replacing the ugly front texture from 508114. Also used a new seat texture to replace the old one.
3. Old interior version for both Classes 507 and 508.
4. Added compressor sounds for both Classes 507 and 508.
5. Nameplates! Instructions are provided on the texture file.
6. Added the handrails near the door that I forgot to add.

1. Deleted the disused asset "wr_class_508.png" and "IMG_6315.PNG"
2. Added support with the third rail of @TFBPa¥ 田付宝 LV1012's TFB & NSR Rail Pack v0.3