init commit

app/db/session.py

@@ -0,0 +1,10 @@
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from app.config import load_config
+
+_config = load_config()
+engine = create_engine(_config.database_url, pool_pre_ping=True, future=True)
+SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)
+
+def get_session():
+    return SessionLocal()