Agregar campo username a User entity y DTO

- Columna username (unique, nullable) en auth.users
- Campo username en CreateUserDto y UpdateUserDto

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -20,6 +20,7 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
+    "@aws-sdk/client-polly": "^3.1009.0",
     "@aws-sdk/client-s3": "^3.835.0",
     "@aws-sdk/s3-request-presigner": "^3.835.0",
     "@nestjs/common": "^11.1.3",
@@ -33,6 +34,8 @@
     "@nestjs/throttler": "^6.4.0",
     "@nestjs/typeorm": "^11.0.0",
     "@sendgrid/mail": "^8.1.5",
+    "@types/passport-google-oauth20": "^2.0.17",
+    "apple-signin-auth": "^2.0.0",
     "axios": "^1.10.0",
     "bcrypt": "^6.0.0",
     "class-transformer": "^0.5.1",
@@ -40,7 +43,9 @@
     "joi": "^17.13.3",
     "multer": "^2.0.1",
     "multer-s3": "^3.0.1",
+    "openai": "^6.27.0",
     "passport": "^0.7.0",
+    "passport-google-oauth20": "^2.0.0",
     "passport-jwt": "^4.0.1",
     "passport-local": "^1.0.0",
     "pg": "^8.16.2",