add init new files

app/db/init_db.py

@@ -0,0 +1,12 @@
+from sqlalchemy import text
+
+from app.db.base import Base
+from app.db.engine import engine
+
+
+def init_db() -> None:
+    with engine.begin() as conn:
+        conn.execute(text("CREATE SCHEMA IF NOT EXISTS fastapi"))
+        conn.execute(text("CREATE SCHEMA IF NOT EXISTS operationbi"))
+
+        Base.metadata.create_all(bind=conn)