django as backend

[Jonstep101010]

This is the foundational work for most of the other mixed/backend tasks:

• [x] gain knowledge on usage
• [x] #16
• [ ] store data in databases/tables blocked by #7

[github-actions[bot]]

This PR/issue depends on:

• Jonstep101010/ft_transcendence#7 By Dependent Issues (🤖). Happy coding!