Move TradeEvent to ItaTradeEvent.

[#77714604]
TradeEvent module: better org. of related classes.
Developer sees SBA Events feed.

[#77508648]
Reorganize TradeEvents::Ita specs.
Ability to index all Trade Event sources.
Consolidated Trade Events API spec.
Able to filter cons. Trade Events by sources.
Developer sees Ex-Im trade events.

[#77045504]

Conflicts:
	app/models/trade_event/consolidated.rb
	lib/tasks/ita.rake
SBA's street field maps to address.
EXIM/SBA: Industries empty array if none in source
SBA: Remove state, add industries to multi-match.
Removes useless assignment.
Fix to exim spec failures related to the removal of event id 44866.
Fix for exim-related spec failures due to the removal of event id 44886
Trade Events: bring specs in line with recent changes.
exim: fix importer always working on live data
Exim: add raw source XML doc as fixture data.
Trade Events: be explicit with superclass naming.
Source will be a string in the result doc.
Developer can access USTDA Events