Building Interactive Authorization on top of first party apps draft (#736)

* add initial comparison table

* add some questions to table

* first rough draft specifing interactive authorization with FPA profile

* Apply suggestions from code review

Co-authored-by: Frederik Krogsdal Jacobsen <fkj@users.noreply.github.com>

* minor updates

* update comparison to FPA redirect_to_web, as suggested by Gareth.

* Apply suggestions from code review

Co-authored-by: Judith <59833642+ju-cu@users.noreply.github.com>
Co-authored-by: Paul Bastian <paul.bastian@posteo.de>
Co-authored-by: Micha Kraus <7931215+mickrau@users.noreply.github.com>

* fix Error usage location

* change interaction_type name to urn:openid:dcp:ia:auth_via_web

* Apply suggestions from code review

Co-authored-by: Micha Kraus <7931215+mickrau@users.noreply.github.com>

* remove comparison table

* Apply suggestions from code review

Co-authored-by: Frederik Krogsdal Jacobsen <fkj@users.noreply.github.com>

* add document history entry

* add missing auth_session parameter in examples

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Co-authored-by: Frederik Krogsdal Jacobsen <fkj@users.noreply.github.com>
Co-authored-by: Judith <59833642+ju-cu@users.noreply.github.com>
Co-authored-by: Paul Bastian <paul.bastian@posteo.de>

Author: 4 people