zalmoxes-laran/3D-survey-collection: v1.6.20dev20

Introduces progress tracking for LOD generation, including new scene properties, progress update functions, and a UI panel displaying current task, LOD/object progress, elapsed time, and a recent operations log. Refactors LOD export to use clean object names for materials and textures, and ensures objects are moved to the correct LOD0 collection. Updates the material creation function to accept a custom name for improved naming consistency.