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

node_modules/md5/webpack.config.js

@@ -0,0 +1,13 @@
+const {resolve} = require('path');
+
+module.exports = {
+  entry: [
+    './md5.js'
+  ],
+  output: {
+    path: resolve('./dist'),
+    filename: 'md5.min.js',
+    libraryTarget: "var",
+    library: "MD5"
+  }
+};