Add the display of numbers on the wrist arm of the hard cross arm

Add overhead contact wire brackets inside the tunnel. Added 1 and 2 options for manually pulling contact wire components to facilitate switching between positive and negative positioning.

Fix the issue of shadow missing in H-shaped steel columns

Added several external additional wire brackets and fixed some details issue.

Modified the issue of incorrect height of the outer cable rack on the side

Several types of cantilevers have been added. Optimize the details of components. Modify the details of the manual catenary.

The manual catenary updates the elastic chain suspension mode, thick line, and supports the automatic removal of indication marks.

修复轨道的问题