feat: use postgres for change notification

packages/server/src/api.ts

@@ -28,6 +28,9 @@ class BaseError extends Error {
 }
 
 const createApi = async (runtime: StashRuntime = new StashRuntime()) => {
+  runtime.documents.on('upserted', (document) => {
+    console.log(document);
+  });
   const app = fastify().withTypeProvider<ZodTypeProvider>();
   app.setValidatorCompiler(validatorCompiler);
   app.setSerializerCompiler(serializerCompiler);