feat: add notification microservices and transactional outbox

package.json

@@ -8,12 +8,17 @@
     "node": ">=20 <25"
   },
   "scripts": {
-    "build": "nest build",
-    "start": "nest start",
-    "start:dev": "nest start --watch",
-    "start:prod": "node dist/main",
-    "lint": "eslint \"src/**/*.ts\"",
-    "lint:fix": "eslint \"src/**/*.ts\" --fix",
+    "build": "nest build api-gateway && nest build notification-service && tsc -p tsconfig.legacy.json && node scripts/copy-legacy-entry.js",
+    "build:gateway": "nest build api-gateway",
+    "build:notifications": "nest build notification-service",
+    "start": "nest start api-gateway",
+    "start:dev": "nest start api-gateway --watch",
+    "start:notification-service": "nest start notification-service",
+    "start:notification-service:dev": "nest start notification-service --watch",
+    "start:prod": "node dist/main.js",
+    "start:notification-service:prod": "node dist/apps/notification-service/main",
+    "lint": "eslint \"{src,apps,libs}/**/*.ts\"",
+    "lint:fix": "eslint \"{src,apps,libs}/**/*.ts\" --fix",
     "test": "jest",
     "test:coverage": "jest --runInBand --coverage && node scripts/check-coverage.js",
     "test:watch": "jest --watch",
@@ -33,6 +38,7 @@
     "@nestjs/config": "^4.0.4",
     "@nestjs/core": "^11.1.28",
     "@nestjs/jwt": "^11.0.2",
+    "@nestjs/microservices": "^11.1.28",
     "@nestjs/mongoose": "^11.0.4",
     "@nestjs/passport": "^11.0.5",
     "@nestjs/platform-express": "^11.1.28",
@@ -41,6 +47,8 @@
     "@nestjs/websockets": "^11.1.28",
     "@socket.io/redis-adapter": "^8.3.0",
     "@types/passport-google-oauth20": "^2.0.17",
+    "amqp-connection-manager": "^4.1.14",
+    "amqplib": "^0.10.8",
     "bcrypt": "^6.0.0",
     "bullmq": "^5.76.5",
     "class-transformer": "^0.5.1",
@@ -64,6 +72,7 @@
     "@nestjs/cli": "^11.0.24",
     "@nestjs/schematics": "^11.1.0",
     "@nestjs/testing": "^11.1.28",
+    "@types/amqplib": "^0.10.7",
     "@types/bcrypt": "^5.0.2",
     "@types/compression": "^1.8.1",
     "@types/express": "^4.17.21",