Introduce utils.h

Introduce utils.h to have common routines.

Bug: 130388701
Test: build & pass presubmit tests
Change-Id: Ic40da64fefc1f2216bdea9ea93a15e5abb8f23a4
diff --git a/libnativeloader/library_namespaces.h b/libnativeloader/library_namespaces.h
index ff8fda9..103cfac 100644
--- a/libnativeloader/library_namespaces.h
+++ b/libnativeloader/library_namespaces.h
@@ -26,6 +26,7 @@
 #include <string>
 
 #include "jni.h"
+#include "utils.h"
 
 namespace android::nativeloader {