cleaning up moduleloader - incomplete

include/error.hpp

@@ -7,6 +7,10 @@ enum class DPMError {
     PATH_NOT_DIRECTORY,
     PERMISSION_DENIED,
     MODULE_NOT_FOUND,
+    MODULE_NOT_LOADED,
     MODULE_LOAD_FAILED,
-    INVALID_MODULE
+    INVALID_MODULE,
+    SYMBOL_NOT_FOUND,
+    SYMBOL_EXECUTION_FAILED,
+    UNDEFINED_ERROR
 };