feat: add notification microservices and transactional outbox

tsconfig.json

@@ -10,6 +10,11 @@
     "sourceMap": true,
     "outDir": "./dist",
     "baseUrl": "./",
+    "paths": {
+      "@app/contracts": ["libs/contracts/src"],
+      "@app/events": ["libs/events/src"],
+      "@app/common": ["libs/common/src"]
+    },
     "incremental": true,
     "skipLibCheck": true,
     "strict": true,