Previously CBOR tags where used to distinguish different types of manifests and SW evidence (e.g. CoSWID from SUIT manifest from CoRIM). This didn't work for JSON at all.

This PR switches to CoAP registered content format IDs as a more universal and better aligned solution.


* Use CoAP Content format fo swevidence and manifest claims

* Enable SUIT manifest; improved comments

* small improvements

* Enable SUIT manifest; other minor corrections

* remove temp line from Makefile

Co-authored-by: Laurence Lundblade <lgl@securitytheory.com>