Add 422 UNIDENTIFIABLE_DEVICE error in Service Exceptions table (§6.1)

[bigludo7]

Problem description
Very small one....

In Appendix A: info.description template for device identification from access token we can read:

If the device object is not included in the request and
the device information cannot be derived from the 3-legged access token, the server will return a 422 UNIDENTIFIABLE_DEVICE error.

.... but 422 UNIDENTIFIABLE_DEVICE error is not in Service Exceptions table (§6.1)

Expected action
Add 422 UNIDENTIFIABLE_DEVICE error in Service Exceptions table (§6.1)

Additional context
@rartych as it seems to be a straightforward i can probably craft the PR? wdyt?

[rartych]

Yes, I agree - it is correction for consistency between Chapter 6 and Appendix A.

[bigludo7]

Thanks @rartych - Will do.
As I'm not codeowner I cannot create branch and as I have already forked for #251 so will wait resolution of this later before to create a new one.

[PedroDiez]

Also would make sense to incorporate HTTP 422 to section 3.2 (as mentioned in #248)
https://github.com/camaraproject/Commonalities/blob/main/documentation/API-design-guidelines.md#32-http-response-codes

[jpengar]

Add 422 UNIDENTIFIABLE_DEVICE error in Service Exceptions table (§6.1)

@bigludo7 @rartych @PedroDiez I would add it to Section 6.1 and to the table in Section 6.2, as with the other device-related error definitions.

[hdamker]

In addition it would good to add it also to artifacts/CAMARA_common.yaml for consistency.