feat: format SQL code via sqlparse in the /format endpoint

requirements.txt

@@ -21,6 +21,7 @@ python-dotenv==1.2.1
 pytz==2025.2
 pyyaml==6.0.3
 ruff==0.15.17
+sqlparse==0.5.5
 sniffio==1.3.1
 starlette==0.50.0
 tortoise-orm==0.25.2