chore: add project scaffold

.env.example

@@ -0,0 +1,19 @@
+APP_ENV=local
+MONGO_URI=mongodb://localhost:27017
+MONGO_DB_NAME=gapido_auth
+REDIS_URL=redis://localhost:6379/0
+RABBITMQ_URL=amqp://guest:guest@localhost:5672/
+JWT_SECRET_KEY=change-me-use-a-long-random-secret
+JWT_ISSUER=gapido-auth
+ACCESS_TOKEN_TTL_SECONDS=900
+REFRESH_TOKEN_TTL_SECONDS=604800
+OTP_TTL_SECONDS=120
+OTP_MAX_ATTEMPTS=5
+OTP_REQUEST_LIMIT=3
+OTP_REQUEST_WINDOW_SECONDS=300
+KAVENEGAR_API_KEY=replace-with-real-key
+KAVENEGAR_LOGIN_TEMPLATE=login-otp
+ADMIN_MOBILE=989120000000
+GRPC_HOST=0.0.0.0
+GRPC_PORT=50051
+