[front] Investigate possibilities for Tournesol to be a PWA

[lfaucon]

• [x] Learn about PWA: https://web.dev/progressive-web-apps/
• [x] Make a small presentationation to the team with the most important things to understand about PWA
• [ ] If it is decided, make the necessary changes such that Tournesol can be a PWA

[adrausch]

Presentation for when? In english?

[lfaucon]

For anytime when ready & in French should be good :)

[lfaucon]

To-do short term:

• Check what can be done easily and do it.
• Discuss with the team about what cannot be done easily and would be valuable