init testarena backend service

asf-pc-server/testarena_pc_backend/testarena_app/database.py

@@ -0,0 +1,16 @@
+from sqlalchemy import create_all_engines, create_engine
+from sqlalchemy.orm import sessionmaker
+import os
+
+# Using SQLite for simplicity as requested
+DATABASE_URL = "sqlite:///d:/ASF - course/ASF_01/ASF_tools/asf-pc-server/testarena_pc_backend/testarena_app/testarena.db"
+
+engine = create_engine(DATABASE_URL, connect_args={"check_same_thread": False})
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()