Add OWNERS for AOSP-first project to facilite cherry-picking flag flips
to AOSP.

Test: Presumbits
Bug: 356154185
Bug: 348355775
Change-Id: Ibd5e671f89008e957dfbf373e7636d3cca262160
diff --git a/aconfig/trunk_staging/com.android.art.flags/OWNERS b/aconfig/trunk_staging/com.android.art.flags/OWNERS
new file mode 100644
index 0000000..3414a74
--- /dev/null
+++ b/aconfig/trunk_staging/com.android.art.flags/OWNERS
@@ -0,0 +1 @@
+include platform/art:/OWNERS