Implement Authentication for the Web Part

[RemiDesgrange]

Service Talk and JAX-RS have some primitive to handle security : https://apple.github.io/servicetalk//servicetalk-http-security-jersey/SNAPSHOT/index.html Using this to limit access to some tilesets, and admin API.

[bchapuis]

We should adapt the openapi definition accordingly. I wonder if the code generator will produce code related to authentification or if this is left to the developer.

https://swagger.io/docs/specification/authentication/