Add OWNERS file for SdkExtensions

Test: N/A
Change-Id: Ie3b92df13d646343ef16f7aa1c2e5f7a23f7cb93
diff --git a/OWNERS b/OWNERS
new file mode 100644
index 0000000..8b6675a
--- /dev/null
+++ b/OWNERS
@@ -0,0 +1 @@
+include platform/packages/modules/common:/OWNERS