[FR] Deliniate manual / automated trades in my_orders and recent_swaps

[smk762]

Follows on from https://github.com/KomodoPlatform/komodo-wallet-archive/issues/1411

It would be useful to be able to filter orders and histories to display only those initiated by the autobots. Ideally, this flag would be present in both local json files and the MM2.db to indicate maker_is_bot so stats could be derived to show the proportion of orders / trades which involved a makerbot.