add pre build targets to package creation

Author: JaccovG

Makefile

@@ -31,4 +31,10 @@ cleanall:
 	$(MAKE) -C examples/example_har_smartphone cleanall
 
 libclean:
-	$(MAKE) -C lib/make clean
+	$(MAKE) -C lib/make clean
+
+package:
+	$(MAKE) -C lib/make -f package.mk package
+
+cleanpackage:
+	$(MAKE) -C lib/make -f package.mk clean