Add metadata files for itertools.

Bug: 155309706
Change-Id: Iea48d273607e7a3942a26779a23ee023346eb588
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..46fc303
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+include platform/prebuilts/rust:/OWNERS