What's changing

Closes #853

The current folder structure with redundant single file folders, and the components split into organisms and molecules can be confusing and difficult to navigate through as it doesn't convey which part of the app it is, or what the file/folder represents

This PR moves things around to make them easier to find and splits the frontend components by feature/page instead of the atomic design concept of organisms and molecules which doesn't really tell if the components inside are reusable and stateless or not.

How to test it

Steps to test the changes:

1. run the project and make sure the components are being loaded properly

Additional notes for reviewers

I already...

• Tested the changes in a working environment to ensure they work as expected
• Added some tests for any new functionality
• Updated the documentation (both comments in code and product documentation under /docs)
• Checked if a (backend) DB migration step was required and included it if required