Feature Request: Add a Toggle for Transfer Sign Orientation per Station at RMG(only Guangzhou metro style)

[Yun1336]

I would like to propose a new feature: adding a toggle switch that allows users to set the orientation of transfer signs individually for each station.
Specifically, this toggle should enable users to choose between two orientations for each station's transfer sign:
1.Horizontal orientation
2.Vertical orientation
This feature will significantly enhance flexibility, based on two key reasons:
1.It addresses the current limitation where transfer signs can only follow a single fixed orientation (e.g., vertical only in RMG).
2.It aligns with real-world application scenarios—Guangzhou Metro Corporation currently uses horizontal transfer signs in some of its stations.
This will allow users to design sign styles that are more context-appropriate and better suited to actual needs, based on the layout of different stations.