Train morphometrics models for `in-merged` and `in-merged-bc-merged` datasets

[FrancescoCasalegno]

Context

• In #29 we introduced feature extraction and model training using moprhometrics features.
• However, only 3 datasets are covered:
  • in
  • pc
  • `janelia
• The following 2 datasets are not covered by morphometrics feature extraction and training:
  • in-merged — dataset defined by dvc/data/final/IN_data.csv
  • in-merged-bc-merged — dataset defined by dvc/data/final/IN_data_BC_merged.csv

Actions

• [ ] Cover the two missing datasets (in-merged and in-merged-bc-merged) in feature extraction + model training.