Is your feature request related to a problem? Please describe.
Currently, only the mod's internal trains have displays showing the terminal station.
当前只有模组内置列车具备显示屏

Describe the solution you'd like
希望能够在资源包生成器中，为自定义模型添加可自定义的显示屏，用于显示终点站、下一站、线路号、车号等信息。
Hope to add a feature to add displays for custom models in the Resource Pack Creator, showing the terminal station, the next station, line number, car number, etc.

Additional Information
Add any other context or screenshots about the feature request here.
另外，希望支持自定义格式的车厢号显示
不同地区的车号编排方式有所不同，希望能通过运算的方式生成车厢号