WIP: initial implementation of OSM / overpass use

[arthurlutz]

Still a lot to do :

• [x] unify front rendering (right now only closed/open)
• [ ] enable use of of both google and OSM (right now mutually exclusive)
• [ ] code improvements
• [ ] tests
• [ ] UX for configuring
• [ ] remove useless debuging

[arthurlutz]

sort-of-working on my setup :

:tada:

[arthurlutz]

@Menturan I'd be interrested in your feedback on this first "work-in-progress" version...

[arthurlutz]

Serious bug :

• [ ] the overpass request only needs to be done maybe once every 24h, but the display needs to be refreshed every minute or so, right now it's not refreshing the info

[arthurlutz]

Added the information about next opening and closing