[MTR3/4]Korail Suburban Trains

Added contents

• Korail Class 312000 (14th generation, normal/tagged)
• Korail Class 3000 (3rd generation)

Special Thanks: Cake11HD (graffiti texture)

Only for MTR4 (Beta 16~)

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

Json changed to mtr4 format

Added 5m Pantograph carriage for class 351000, 312000

Removed Fictional/371000 train

MTR3 Only version (NTE Required)