Add metadata.json file for TypeScript async sample (#182)

* Add metadata.json file for TypeScript async sample

* Drop placeholder strings due to build errors

Author: brnkrygs

typescript-test-samples/async-architectures/async-lambda-dynamodb/metadata.json

@@ -0,0 +1,28 @@
+{
+  "title": "Asynchronous Integration Test with Lambda Event Listener and DynamoDB",
+  "description": "This project used a test harness to perform integration testing of an asynchonous AWS Lambda handler.",
+  "content_language": "English",
+  "language": "TypeScript",
+  "type": ["Integration"],
+  "diagram": "/img/s3-lambda-s3.png",
+  "framework": "SAM",
+  "services": ["s3", "lambda","dynamodb"],
+  "git_repo_url": "https://github.com/aws-samples/serverless-test-samples",
+  "pattern_source": "AWS",
+  "pattern_detail_tabs": [
+      {
+          "title": "Application Code",
+          "filepath": "/src/app.ts"
+      },
+      {
+          "title": "Integration Tests",
+          "filepath": "/src/tests/integration/test_async_transform.test.ts"
+      }
+  ],
+  "authors": [
+      {
+        "name": "Vikas Gupta",
+        "bio": "Cloud Application Architect at AWS",
+      }
+  ]
+}