Tagged Submissions + Submission Descriptions

[StoneT2000]

Before submission on competition submission page, allow user to select from a fixed list of tags, as well as a write a corresponding description for their submission

https://ai.acmucsd.com/competitions/wi22nn/upload <- current look

[StoneT2000]

Hardcoded tags in frontend code: for now let the options be feather weight, middle weight, and heavy weight.

Then once a user selects this, this information should be sent along with the submission file to the backend.