Add display and claim metadata (#236)

* Add display and claim metadata

* Fix references

* Missing line

* Apply suggestions from code review

Co-authored-by: Brian Campbell <[email protected]>

* display and claim type metadata to doc history

* Add example

* Really add example now

* Fix typo

* inline example because Brian's brain can't handle outsourced examples

* inline example because Brian's brain can't handle outsourced examples

* Add back missing parts of usage description

* Remove changes to gitignore file

* Issuer's intent ->    consistent with the intent of the provider of the Type Metadata

Co-authored-by: Daniel Fett <[email protected]>

* Apply suggestions from code review

Co-authored-by: Oliver Terbu <[email protected]>

* Apply suggestions from code review as discussed on the editor's call

* Update draft-ietf-oauth-sd-jwt-vc.md

* Fix example and add CSS color reference

* Add part on sandboxing

* Attempt to fix reference

* Apply suggestions from Brian's code review

Co-authored-by: Brian Campbell <[email protected]>

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Co-authored-by: Brian Campbell <[email protected]>
Co-authored-by: Brian Campbell <[email protected]>
Co-authored-by: Oliver Terbu <[email protected]>