feat: Add example values to DTOs for improved API documentation

backend/Makefile

@@ -1,6 +1,6 @@
 # Time Tracker Backend Makefile
 
-.PHONY: db-start db-stop db-test model-test run build clean migrate seed help
+.PHONY: db-start db-stop db-test model-test run build clean migrate seed swagger help
 
 # Default target
 .DEFAULT_GOAL := help
@@ -25,6 +25,7 @@ help:
 	@echo "  make seed        - Seed the database with initial data"
 	@echo "  make db-drop-users - Drop the users table"
 	@echo "  make db-reinit   - Re-initialize the database"
+	@echo "  make swagger     - Generate swagger documentation"
 	@echo "  make help        - Show this help message"
 
 # Start the database
@@ -88,7 +89,12 @@ db-drop-users:
 db-reinit:
 	@echo "Re-initializing the database..."
 	@PG_HOST=$(DB_HOST) PG_PORT=$(DB_PORT) PG_USER=$(DB_USER) PG_PASSWORD=$(DB_PASSWORD) PG_DBNAME=$(DB_NAME) go run cmd/migrate/main.go -create_db -drop_db
-	@echo "Database re-initialized"
+# Generate swagger documentation
+swagger:
+	@echo "Generating swagger documentation..."
+	@swag init -g cmd/api/main.go
+	@echo "Swagger documentation generated"
+
 
 help:
 	@echo "Time Tracker Backend Makefile"