Analyse particule-size distribution (PSD):
- Fit particule size distribution with the Fredlund model (Fredlung et al. 2012)
- Derive characteristics particle size (D10, D30, D60)
- Derive coefficient of uniformity Cu and of curvature Cc
## TODO
- See model of 10.1007/s10064-021-02328-w
- Export fitted curve in csv