Redesign for some clarity

Some options were not very obvious. Working to fix that.

Release 1.4.5

Blender 5.x support
User interface updates

Release 1.3.8

Added an export bounding box CSV file in the MSTS configuration file in a compatible order.

Release 1.3.3

Fixes an error that I re-introduced somewhere along the way, related to generating the Collections needed by the exporter.

Release 1.3.2

This release introduces the "Fix UV MAP" code, which was previously available as a standalone Blender Python script for assigning UV Maps to imported models.

Release 1.3.1

Initial release of the Open Rails Blender Helper add-on.