Add crud for miner payments

mev_inspect/crud/miner_payments.py

@@ -0,0 +1,31 @@
+import json
+from typing import List
+
+from mev_inspect.models.miner_payments import MinerPaymentModel
+from mev_inspect.schemas.miner_payments import MinerPayment
+
+
+def delete_miner_payments_for_block(
+    db_session,
+    block_number: int,
+) -> None:
+    (
+        db_session.query(MinerPaymentModel)
+        .filter(MinerPaymentModel.block_number == block_number)
+        .delete()
+    )
+
+    db_session.commit()
+
+
+def write_miner_payments(
+    db_session,
+    miner_payments: List[MinerPayment],
+) -> None:
+    models = [
+        MinerPaymentModel(**json.loads(miner_payment.json()))
+        for miner_payment in miner_payments
+    ]
+
+    db_session.bulk_save_objects(models)
+    db_session.commit()