Data provider simplification, tests, and documentation (#1997)

* Ignore env.test from source control

* Simplification of providers interface

* Synth tests

* Update money to use new find rates method

* Remove unused issues code

* Additional issue feature removals

* Update price data fetching and tests

* Update documentation for providers

* Security test fixes

* Fix self host test

* Update synth usage data access

* Remove AI pr schema changes

app/models/security/provideable.rb

@@ -0,0 +1,31 @@
+module Security::Provideable
+  extend ActiveSupport::Concern
+
+  Search = Data.define(:securities)
+  PriceData = Data.define(:price)
+  PricesData = Data.define(:prices)
+  SecurityInfo = Data.define(
+    :ticker,
+    :name,
+    :links,
+    :logo_url,
+    :description,
+    :kind,
+  )
+
+  def search_securities(symbol, country_code: nil, exchange_operating_mic: nil)
+    raise NotImplementedError, "Subclasses must implement #search_securities"
+  end
+
+  def fetch_security_info(security)
+    raise NotImplementedError, "Subclasses must implement #fetch_security_info"
+  end
+
+  def fetch_security_price(security, date:)
+    raise NotImplementedError, "Subclasses must implement #fetch_security_price"
+  end
+
+  def fetch_security_prices(security, start_date:, end_date:)
+    raise NotImplementedError, "Subclasses must implement #fetch_security_prices"
+  end
+end