[apple] Exposes that the dSYM bundle contains relocation information

The structure of a dSYM bundle is the following:

  $target.dSYM/
    Contents/
      Info.plist
      Resources/
        DWARF/
          $target
        Relocations/
          $arch/
            $target.yml

Update the toolchain and build rules to list the missing Relocations.

Bug: none
Change-Id: Ie4318253a1c7be6c2d235c8c92d76d014b6d8716
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7003395
Reviewed-by: Mark Mentovai <mark@chromium.org>
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1526227}
NOKEYCHECK=True
GitOrigin-RevId: 6739edea3b867e783cfdef497beb73aba4060469