feat: add image resolution controller in create new round

[ItsAbhinavM]

Description

Fixes #289 and Fixes #323
According to these issues the major concern was the inability to update certain parameters on round creation notably, min_resolution and file_type. I've checked both frontend and backend files for this and came with this conclusion.

The backend is perfectly fine as DEFAULT_ROUND_CONFIG is being updated on create_round function and it includes all the parameters including min_resolution. So the backend is fine. The only change we need to add was in RoundNew file and that's what I did.

This is how new round looks like:

Database log for min_resolution

[ItsAbhinavM]

I haven't added file_type as a checkbox in frontend since it works perfect for most of the image file extensions in the backend and it is anyways required by default for every round.