Adding default plugins and framework

Author: roh26it

conf.json

@@ -0,0 +1,8 @@
+{
+  "plugins_enabled": ["default", "portkey"],
+  "credentials": {
+    "portkey": {
+      "apiKey": "..."
+    }
+  }
+}

conf_sample.json

@@ -0,0 +1,5 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};