chore: add missing jest config to hcl-tools package

Author: xiehan

packages/@cdktf/hcl-tools/jest.config.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) HashiCorp, Inc.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+
+module.exports = {
+  testMatch: ['**/*.test.ts', '**/*.test.tsx'],
+  "transform": {
+    "^.+\\.tsx?$": "ts-jest"
+  },
+  moduleFileExtensions: [
+    "js",
+    "ts",
+    "tsx"
+  ],
+}