[Opinion] Migrate from java backend

[Benjamin-Mueggenburg]

The current project is using java as the back-end. Java is slowly becoming less and less used and out of date. Migrating from java to python (using flask) or NodeJS (using Express), would allow for more people to contribute as these two are more well known, with better documentation and tutorials. Furthermore, these popular backed languages/libraries, are constantly evolving with new features, and tools for debugging.