camera: Add ICameraProvider@2.6.

ICameraProvider@2.6 adds the following new apis:

- getConcurrentStreamingCameraIds()
    tells the camera framework which combinations of camera ids may
    stream concurrently with guaranteed stream combinations

- isConcurrentSessionConfigurationSupported()
    in order to assist the camera framework in knowing which camera ids may stream
    concurrently and whether certain concurrent session configurations will
    be supported by the camera HAL.

Bug: 77960042

Test: builds

Change-Id: I47caddb7ae5c7b1b2e926f7b877f53a367564d2a
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>