Reland "[CCA WebUI] Move CCA and its WebUI to chromeos/components"

This is a reland of c027dce360f73c49a97330b47994481fbd763937

Original change's description:
> [CCA WebUI] Move CCA and its WebUI to chromeos/components
>
> In this CL, we move some CCA related components to
> //chromeos/components/camera_app_ui
>
> to make it consistent to Help app and Media app.
>
> 1. CCA resources
>   From: //chrome/browser/resources/chromeos/camera/
>   To: //chromeos/components/camera_app_ui/resources/
>
> 2. CCA WebUI
>   From: //chrome/browser/ui/webui/chromeos/camera/
>   To: //chromeos/components/camera_app_ui/
>
> 3. Camera App Helper Implementation
>   From: //components/chromeos_camera/
>   To: //chromeos/components/camera_app_ui/
>
> Bug: 980846
> Test: Launch CCA and CCA works normally as a platform app
> Test: tast run [DUT] camera.CCAUI*
> Change-Id: Ic70bd54b35194e3c3398e9f3de9af200346491d4
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2131542
> Commit-Queue: Wei Lee <wtlee@chromium.org>
> Reviewed-by: Shik Chen <shik@chromium.org>
> Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
> Reviewed-by: Ken Rockot <rockot@google.com>
> Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
> Reviewed-by: Lei Zhang <thestig@chromium.org>
> Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
> Reviewed-by: Scott Violet <sky@chromium.org>
> Reviewed-by: Dominick Ng <dominickn@chromium.org>
> Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
> Reviewed-by: calamity <calamity@chromium.org>
> Auto-Submit: Wei Lee <wtlee@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#775987}

Bug: 980846
Change-Id: If8421c04573c567c2f2e7d8842f022609fab2a4a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2235263
Auto-Submit: Wei Lee <wtlee@chromium.org>
Reviewed-by: Shik Chen <shik@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Alex Moshchuk <alexmos@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Dominick Ng <dominickn@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776804}