Add an OWNERS file

Change-Id: I90012e62e7fcc7fb396e10c8c4fd2ca1e4a41ba4
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/44044
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>

OWNERS

diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..76bf21b
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1,3 @@
+bclayton@google.com
+cwallez@chromium.org
+dneto@google.com