[sync] Rename components/sync/driver to components/sync/service

It was agreed within the Sync team that the name 'driver' conveys
little and is a historic artifact. The new name, 'service', reflects
what most dependent targets care about: SyncService and adjacent APIs.

Semi-automated patch generated via:
git mv components/sync/driver components/sync/service
./tools/git/mass-rename.py
cat /tmp/affected-files.txt | \
  xargs sed -i 's/#include/#import/g'
git grep -l 'sync/driver' |\
  xargs sed -i 's/components\/sync\/driver/components\/sync\/service/g'
git grep -l 'sync_driver_sync_internals' |\
  xargs sed -i 's/sync_driver_sync_internals/sync_service_sync_internals/g'
git grep -l 'components/sync/service:driver' |\
  xargs sed -i 's/sync\/service:driver/sync\/service/g'
git grep -l 'kSyncDriverSyncInternalsResources' |\
  xargs sed -i\
  's/kSyncDriverSyncInternalsResources/kSyncServiceSyncInternalsResources/g'
git grep -l 'IDR_SYNC_DRIVER_SYNC' | \
  xargs sed -i 's/IDR_SYNC_DRIVER_SYNC/IDR_SYNC_SERVICE_SYNC/g'
sed -i 's/driver/service/g' components/sync/service/BUILD.gn\
  components/sync/service/sync_api_component_factory.h
sed -i 's/_H__/_H_/g' components/sync/service/*.h
git cl format

Manual changes include:
1. Build target rename in components/sync/driver/BUILD.gn.
2. Header guard issues surfaced by presubmit.
3. Several header files reintroduced to avoid breaking downstream.

Disable-Rts: True
Change-Id: If23629e79e781e55c3d783e3074fb536311928d6
Bug: 1444709
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4518214
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Mikel Astiz <mastiz@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1144710}