Replace axios with fetch

[AdamFipke]

Description

Apparently axios is kinda old or deprecated or something and we're supposed to be using fetch.

Also, we need to use fetch for any Next.js server components, and in doing so may help performance considerably for certain pages.

This may only require adjusting our index.ts for our API, but may require a lot more. Maybe look into it (even just searching up replacing axios with fetch).

https://www.reddit.com/r/nextjs/comments/14fse4d/is_using_axios_bad_for_a_nextjs_project/

https://medium.com/@johnnyJK/axios-vs-fetch-api-selecting-the-right-tool-for-http-requests-ecb14e39e285