Add curated datasets and update ontology configuration in data pipeline

[ubyndr]

This PR introduces the following changes to the data pipeline:

1. Curated Dataset Sources:

   • Added 3 new curated dataset files to the curated_data directory:
     • GutAtlas.Org Author Category JB V1 - Colon Immune.csv
     • GutAtlas.Org Author Category JB V1 - Fetal and Pediatric Cell Atlas.csv
     • GutAtlas.Org Author Category JB V1 - Teichmann and Burclaff.csv

2. Ontology Updates:

   • Added two lung datasets and the clm-kg ontology to the fullontologies.txt configuration file.