zephyr-chrome: add OWNERS files

Think the following is good?

1. Unrestricted OWNERS on projects/experimental.
2. A welcoming OWNERS file in the base of the repository.

BUG=none
TEST=presubmit

Change-Id: I0926db70ce1f30df1b3416096a775fd7d3492b26
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/zephyr-chrome/+/2239491
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Jett Rink <jettrink@chromium.org>
2 files changed
tree: 37987dd45f96b36dec3c53bf1be6e5b31c1fea6b
  1. OWNERS
  2. projects/