Add function for summing of Ensembl IDs (#377)

move dicts to init

fix cell state gene embeddings bug (#345)

Prevent ruff/isort on init

Add classifier module and examples

Add function to extract and plot cell embeddings

Subclass collator for cell classification

add in silico perturbation module

Add data collator for cell classification and example for cell classification

Add Geneformer tokenizer and updated model card