Add OWNERS am: 8ab15242e4

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/proc-macro-error/+/1356529

Change-Id: I2fb15c8bb16f6d5b0eae5fc8091a89d0bb64ae57
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