Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/controllers/microsoft/callbacks_controller.rb

@@ -0,0 +1,17 @@
+class Microsoft::CallbacksController < OauthCallbackController
+  include MicrosoftConcern
+
+  private
+
+  def oauth_client
+    microsoft_client
+  end
+
+  def provider_name
+    'microsoft'
+  end
+
+  def imap_address
+    'outlook.office365.com'
+  end
+end