replace bpnetlite with tangermeme

[avantikalal]

1. Updates all functions that use bpnetlite (get_gc_matched_negatives and dinuc_shuffle) to use tangermeme instead.
2. Added start and end args to dinuc_shuffle since these are now available in tangermeme
3. Removed bpnetlite from requirements.
4. (To improve testing of datasets that use these functions) added the add_batch_axis argument to indices_to_one_hot
5. (For consistency with other functions) Added the input_type argument to convert_input_type
6. Updated tests
7. Fixed a bug in marginalize_patterns caused by the seed not being passed to PatternMarginalizeDataset

Addresses #12

[gokceneraslan]

I'll leave this one to @suragnair

[suragnair]

looks good to me!