lambda_normal and lambda_depth

[dkebude]

Hi @MrTornado24 and @tonybear999!

Great work! I have been experimenting with the DreamCraft3D implementation for a while and I have seen that the lambda_depth and lambda_normal are set 0.0 for all Geometry Sculpting stage configs. lambda_depth_rel seems to be available and 0.05 for the coarse stages.

I am having trouble finding where the ground truth normal data (that is estimated by preprocess_image.py) is being utilized during optimization.

Best wishes and cheers!