[Feature] Coding/hitbox viewer

[AGhostsPumpkinSoup]

Being able to code/paste code in to see the hitboxes in action. At the moment, we do not have a way to properly view and edit code on the fly, which makes it slightly more tedious to test codes. Would be interested in making this a commission if need be.

[ScanMountGoat]

Hitbox viewing has already been suggested in #89. As I've discussed previously, the issue is getting the data in a standardized format. Cross Mod had hitbox viewing but relied on hand authored files in a format that wasn't documented anywhere to my knowledge. The community needs to settles on a format and document it in writing to avoid the issues with the past implementation. Ideally, there would be a tool to generate the data so people don't have to write it out by hand. Actually drawing the hitboxes themselves isn't hard since the shape drawing code already exists for swing prc rendering. I'd be willing to give detailed instructions for the rendering code if someone wants to try implementing it at that point.