feat: Implement admin user management endpoints and user update schema

app/repositories/plan.py

@@ -0,0 +1,17 @@
+"""Plan repository."""
+
+from sqlmodel.ext.asyncio.session import AsyncSession
+
+from app.core.logging import get_logger
+from app.models.plan import Plan
+from app.repositories.base import BaseRepository
+
+logger = get_logger(__name__)
+
+
+class PlanRepository(BaseRepository[Plan]):
+    """Repository for plan operations."""
+
+    def __init__(self, session: AsyncSession) -> None:
+        """Initialize the plan repository."""
+        super().__init__(Plan, session)