Update API service to use raw_waiting_time table

- Change RawOpdCheckpoint model to RawWaitingTime
- Update schema from FeedCheckpointIn to FeedWaitingTimeIn
- Switch to rawdata.raw_waiting_time table
- Keep existing /feed/checkpoint endpoint
- Add new fields: vn, txn, name, doctor_code, doctor_name, location_code, location_name, step_name, time
- Update permission to feed.waiting-time:write

03-apiservice-v0.1/app/db/base.py

@@ -0,0 +1,5 @@
+from sqlalchemy.orm import DeclarativeBase
+
+
+class Base(DeclarativeBase):
+    pass