Grant Management: Explore different ways to link clients (entities) to different client ids

[Dima Postnikov]

In some use cases consent needs to be shared across multiple clients controlled by the same entity (e.g.: web app, Android app and IOS app).

sector_identifer_url is one option that has been suggested.

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Briefly discussed here: https://bitbucket.org/openid/fapi/pull-requests/158/comments-by-dave-tonge/diff#comment-141397224

[Dima Postnikov]

Duplicate of #378

Resolved in: https://bitbucket.org/openid/fapi/pull-requests/261

[Dima Postnikov]

Duplicate