Add parse_result_wrap to wrap a result with another parent node

Use the new wrap function to wrap numbers and immediate nodes

src/parser/util.h

@@ -19,6 +19,7 @@ parse_result_t parse_success(ast_node_t *ast, tokenlist_entry_t *next);
 parse_result_t parse_token(tokenlist_entry_t *current,
                            lexer_token_id_t token_id, node_id_t ast_id,
                            token_validator_t is_valid);
+parse_result_t parse_result_wrap(node_id_t id, parse_result_t result);
 
 extern error_t *err_parse_no_match;