Solution for #71

[CalvinFang-code]

I've made these improvements, hoping they will be useful:

1. Added the _join_comparative_analyses function to _build_metadata_table to incorporate comparative datasets; _join_comparative_analyses queries the comparative dataset using SQL and then prepares for matching; _parse_composite_identifier: parses the ID from the comparative dataset for matching.
2. It worked successfully with Harbison, but failed with Hackett due to a case mismatch (uppercase H). Therefore, I added code to _join_comparative_analyses to try both uppercase and lowercase beginnings for the repo ID.
3. Added a query_dto function to specifically handle the intersection of specified binding and perturbation datasets.
4. I also found some inconsistencies between datasets: BrentLab/harbison_2004;harbison_2004;3
   BrentLab/rossi_2021/rossi_2021_af_combined
   Some use semicolons, others use slashes.

Some use uppercase, others use lowercase:
BrentLab/Hackett_2020;hackett_2020;34 BrentLab/harbison_2004;harbison_2004;3

Do we need to unify them? Or should we handle them separately with functions?
5. I failed to read the calling cards data; the program crashed several times, but I haven't found the reason yet, so I haven't continued with the analysis.

[CalvinFang-code]

I find this strange; this problem didn't occur in my local testing. I'll investigate what's causing this later.