Add stackbit.config.ts (#341)

Author: mhdtrihamdanii

Frontend/stackbit.config.ts

@@ -0,0 +1,9 @@
+import { defineStackbitConfig } from '@stackbit/types';
+
+export default defineStackbitConfig({
+    "stackbitVersion": "~0.6.0",
+    "nodeVersion": "18",
+    "ssgName": "custom",
+    "contentSources": [],
+    "postInstallCommand": "npm i --no-save @stackbit/types"
+})