Graceful shutdown

[purplesmoke05]

• Close: #654
• Modified to allow for graceful shutdown.
  • Modified module is below. I have tested locally each module for graceful shutdown and process resuming when the container is restarted.

name	data update	graceful shutdown	local test
API	DB & contract	✅	graceful shutdown: ✅
indexer	DB	-	-
processor_batch_issue_redeem.py	DB & contract	✅	graceful shutdown: ✅ process resuming: ✅
processor_batch_register_personal_info.py	DB & contract	✅	graceful shutdown: ✅ process resuming: ✅
processor_bulk_transfer.py	DB & contract	✅	graceful shutdown: ✅ process resuming: ✅
processor_create_utxo.py	DB	-	-
processor_generate_rsa_key.py	DB	-	-
processor_modify_personal_info.py	DB & contract	✅	graceful shutdown: ✅ process resuming: ✅
processor_monitor_block_sync.py	DB	-	-
processor_rotate_e2e_messaging_rsa_key.py	DB	-	-
processor_scheduled_events.py	DB & contract	✅	graceful shutdown: ✅ process resuming: ✅
processor_update_token.py	DB & contract	✅	graceful shutdown: ✅ process resuming: ✅