reorganize lua script dir defs

include/common.h

@@ -26,6 +26,10 @@
 // PM3_USER_DIRECTORY will be expanded as if with a "~" upfront, e.g. ~/.proxmark3/
 #define PM3_USER_DIRECTORY "/.proxmark3/"
 
+// PM3 subdirectories:
+#define LUA_LIBRARIES_SUBDIR "lualibs/"
+#define LUA_SCRIPTS_SUBDIR   "luascripts/"
+
 #define PACKED __attribute__((packed))
 
 // debug