this is in accordance with the BSI requirements for 2023+

For forward compatability, clients must ignore additional fields
that are specified in a response.

Fixes: #67

Instead of the /status ressource, the /info ressource can be used instead

https://git.fitko.de/fit-connect/api/-/issues/51

Closes #52

Siehe https://datatracker.ietf.org/doc/html/rfc7517#section-5

Resolves: #55
Resolves: #58