- only throw runtime exceptions on all client calls
- wrap all internal exceptions to 4 defined exceptions the user has to deal with

chore: move hints for retrieving regional codes and leika keys to main section for destination search

- Neuer Routing Client
- Zugriff auf findDestinations und findAreas der Routing API
- Validierung der Signaturen und Claims der Routen-Signaturen
- Handling von detached-signatures (Hinzufügen des detached payloads)

- adds sending of accept- and reject-events
- adds fit-connect problems

- enables end-2-ed encryption by encrypting outside the sdk with the destinations public key 
- send encrypted data to the sdk that handles further submit of the submision data