Global fetch method

[NatsGt]

Description

Fetch method that will work with GET, POST, PUT and DELETE

Fixes #216

How to test?

Set the environment on production (NODE_ENV=production) and test the fetch with the following parameters:

1. endpoint (without /api/users/)
2. method
3. object to be passed to the body if is POST or PUT

Checklist

• [x] I have performed a self-review of my own code
• [x] I have followed the name conventions for CSS Classnames and filenames, Components names and filenames, Style filenames, if you are in doubt check the the project README.MD and here https://github.com/HackYourFuture-CPH/curriculum/blob/master/review/review-checklist.md
• [x] I have commented my code, particularly in hard-to-understand areas, if you code was simple enough mark the box anyway
• [x] I have made corresponding changes to the documentation, if you code was simple enough mark the box anyway
• [x] This PR is ready to be merged and not breaking any other functionality

[Midnighter]

Sometimes the line annotations are bad, I meant a try catch around

const token = await getUserToken();