Moving to new layout, chromiumos-overlays protos to src/config/protos.

Moving to the new layout expressed in:

https://photos.app.goo.gl/4D1tD6epQw2kSNCH6

This brings the chromeos-overlays protos directly into the
src/config/proto location. Generation will not use these protos until we
have other proto dependencies moved and ready to go.

BUG=chromium:1041872
TEST=None, will be via presubmits when generate.sh changes to point here

Change-Id: I6e00482d406eb97fd6578a0e511e9583fc838f04
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/config/+/2052556
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Commit-Queue: David Burger <dburger@chromium.org>
Tested-by: David Burger <dburger@chromium.org>
5 files changed