Colmap blurriness detection rewrite

[SimonDaKappa]

The current blurriness detection in sfm-worker uses Laplacian Variance to detect blurriness, which works well for frames that have real backgrounds. However, any synthetic or well collected dataset will fail these bluriness checks due to have near solid backgrounds.

If we could find a way to dynamically switch between blur detection methods or implement a different one, that would be quite beneficial.