Use payment IDs for BOLT11 payments

Create inbound BOLT11 records from claimable and claimed events so
inbound payments can be tracked by the IDs emitted by LDK.

Generate outbound BOLT11 IDs from KeysManager entropy instead of
deriving them from the payment hash.

Co-Authored-By: HAL 9000

Author: tnull

bindings/python/src/ldk_node/test_ldk_node.py

@@ -235,7 +235,7 @@ def test_spontaneous_payment(self):
         self.assertEqual(received_event.custom_records, custom_tlvs)
 
         sender_payment = node_1.payment(keysend_payment_id)
-        receiver_payment = node_2.payment(keysend_payment_id)
+        receiver_payment = node_2.payment(received_event.payment_id)
 
         self.assertIsNotNone(sender_payment)
         self.assertIsNotNone(receiver_payment)