Step 1 of eliminating nextjs is adding a way to query thumbnails from roblox since nextjs handles that. This implements a batch endpoint and caching to do that. Bonus: thumbnails will actually work once we start using this.
Reviewed-on: #285
Co-authored-by: itzaname <me@sliving.io>
Co-committed-by: itzaname <me@sliving.io>