[Code Health][iOS] Move ios/c/b/ui/infobars to ui_bundled

To simplify the folder hierarchy on iOS and have a clearer layer
separation, all the files in ios/c/b/ui/<foo>/ will be moved to
ios/c/b/<foo>/ui_bundled/ to showcase that they are model files.

Low-Coverage-Reason: LARGE_SCALE_REFACTOR only moving code
Bug: 40223315, 324232673
Change-Id: I2447f2a0e859c27caeb7c42d9c85438a8ea5de10
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6032061
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Commit-Queue: Maksim Moskvitin <mmoskvitin@google.com>
Cr-Commit-Position: refs/heads/main@{#1385532}