Case sensitivity is not consistent throughout API

[dxbednarczyk]

Observed/problematic behavior

Requesting info about plugins, for example to get the latest release of Chunky, hitting
/api/v1/projects/chunky/latestrelease
returns an OK result if the slug of the project is all lowercase.

However, /api/v1/projects/chunky/versions/1.3.92/PAPER/download returns a 404.
This endpoint requires the slug for the project to be properly capitalized, in this case as Chunky.

Expected behavior

The endpoints should have the same case sensitivity, or specify what they require

Steps to reproduce

Different endpoints have different capitalization requirements. I found that messing around with the request builders on the API docs were a good tool to see which endpoints were case-sensitive or not.

The two URLs I used that raised this issue:
https://hangar.papermc.io/api/v1/projects/chunky/latestrelease
https://hangar.papermc.io/api/v1/projects/chunky/versions/1.3.92/PAPER/download

Other

No response

[MiniDigger]

latest release seems to work fine for me, i.e https://hangar.papermc.io/api/v1/projects/chUnky/latestrelease returns fine, the download ill have to take a look at. they just redirect to our cdn (which cant handle casing), they most likely just pass the user data and not the db data.

[MiniDigger]

thanks, if you find any other, please lemme know and ill try to get to these faster...