Add new "push_*()" functions to GDScript

modules/gdscript/gdscript_functions.h

@@ -97,6 +97,8 @@ public:
 		TEXT_PRINTERR,
 		TEXT_PRINTRAW,
 		TEXT_PRINT_DEBUG,
+		PUSH_ERROR,
+		PUSH_WARNING,
 		VAR_TO_STR,
 		STR_TO_VAR,
 		VAR_TO_BYTES,
@@ -117,7 +119,6 @@ public:
 		LEN,
 		IS_INSTANCE_VALID,
 		FUNC_MAX
-
 	};
 
 	static const char *get_func_name(Function p_func);