[0.17.29] Rail Builder Rotation

[DBN]

The update to the rail builder has made specifying rail rotation more annoying than before.
Current problems:

• Can't rotate clockwise.
• Difficult to tell which direction the current rotation setting is. (Only visible when a path to the cursor position at the current angle is found.)
• Rotation setting is lost when shift is released.

My suggestion is that pressing R should switch on rotation mode, which will not go away until the current build operation is completed or cancelled, and this should include a visual overlay that shows the current rotation direction.

Perhaps rotation mode should force the editor to ghost mode, which would give back the ability to auto path around obstacles. (I used it!)