Basic user page design + initial layout for util functions created

[sebastiancrossa]

The title is pretty self-explanatory: this PR includes the design made by KC under the /user (e.g. /user/test), as well as some experimental designs under the /fellow route (e.g. /fellow/test).

Some components are still not done / need refinement, but those don't take up too much time. (KC is still working on some of the components)

I created a utility function that grabs from the test JSON file from the /data directory, but got a weird error where I wasn't able to import fs.

If y'all have any recommendations or design changes you'd like to see, let us know!

Here are some pics of the design:

[kartikcho]

Merging it early to base my work off of these changes.