* Adopt new signedTraceLocationFormat

* QR Code decoding adjustment.

* Adjust failing test & refactoring.

* Fix typo.

* Remove duplicate data class and re-use DefaultTraceLocation.
Adjust to new signature/location bytearray encoding.

* Remove extra interface for TraceLocation and use the dataclass directly.

* Package refactoring

* Fix package import.

* Fix package import in nav graph

* Fix additional package imports.

* Fix additional package imports.