Feature action by affiliate fee address
This extends the API for an actions query with a param for an affiliate fee address. This is useful for thorchain wallets and interfaces that use affiliate fees.
- affiliate fee and affiliate address will be both stored in the meta json of the midgard_agg.actions table
- this pull request for now only contains the implementation for the swap_events. The other events can be implemented in a similar fashion...
Edited by Thomas Bocek