Docs: Update CONTRIBUTORS with LunarG info Add LunarG, Inc. and Mark Lobodzinski to the CONTRIBUTORS file and LunarG, Inc. to the AUTHORS file. Bug: None Change-Id: Id3f9ff2075498532280d4a652a5fffa85dd77f45 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2945696 Reviewed-by: Ian Elliott <ianelliott@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Ian Elliott <ianelliott@google.com>