[w3c/permissions] Add CameraDevicePermissionDescriptor for 'camera' permission (#204)

This allows to differentiate between normal camera permissions and
pan-tilt-zoom camera permissions.

In https://github.com/w3ctag/design-reviews/issues/358, TAG wants that there are distinct prompt for camera and pan/tilt/zoom. This CL adds a CameraDevicePermissionDescriptor dictionary so that the normal camera permission can be requested using {name: "camera", panTiltZoom: false} while the pan/tilt/zoom camera permission can be requested using {name: "camera", panTiltZoom: true}.

The CameraDevicePermissionDescriptor can then be referenced by media capture specifications.


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You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/permissions/pull/204

-- Commit Summary --

  * Add CameraDevicePermissionDescriptor for 'camera' permission

-- File Changes --

    M index.bs (8)

-- Patch Links --

https://github.com/w3c/permissions/pull/204.patch
https://github.com/w3c/permissions/pull/204.diff

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https://github.com/w3c/permissions/pull/204