Added helper to estimate cost of query with YOLOPandas

[mturk24]

Added a new utils package with a query_helpers script designed to add more functionality to YOLOPandas. In particular, I added the ability to estimate token costs per query so that users can better understand how expensive it is to run YOLOPandas on their data. I thought the function had the right tradeoff in simplicity to start.

[ccurme]

Thanks for this @mturk24. I notice that utils is implemented outside of yolopandas/, and currently won't be installed via pip. What is your intent as to how users should access utils?

[mturk24]

Thanks for this @mturk24. I notice that utils is implemented outside of yolopandas/, and currently won't be installed via pip. What is your intent as to how users should access utils?

No problem, I think what you've built is awesome and I'd love to help contribute! I just addressed this by moving utils within 'yolopandas' now.

[ccurme]

Looks good, thanks @mturk24. I added a call to run_query_with_cost to integration tests. As-is it basically checks that get_openai_callback will run and has attributes for total_tokens, prompt_tokens, etc.

[mturk24]

Looks good, thanks @mturk24. I added a call to run_query_with_cost to integration tests. As-is it basically checks that get_openai_callback will run and has attributes for total_tokens, prompt_tokens, etc.

Awesome thanks!