Update test framework: fix run_tests.py to support all test files, add auto-import-check for test files

node_modules/acorn-import-attributes/README.md

@@ -0,0 +1,21 @@
+# Support for import attributes in acorn
+
+## Install
+
+```
+yarn add acorn-import-attributes
+```
+
+## Usage
+
+This module provides a plugin that can be used to extend the Acorn Parser class:
+
+```js
+const {Parser} = require('acorn');
+const {importAttributes} = require('acorn-import-attributes');
+Parser.extend(importAttributes).parse('...');
+```
+
+## License
+
+This plugin is released under an MIT License.