Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/services/imap/microsoft_fetch_email_service.rb

@@ -0,0 +1,17 @@
+class Imap::MicrosoftFetchEmailService < Imap::BaseFetchEmailService
+  def fetch_emails
+    return if channel.provider_config['access_token'].blank?
+
+    fetch_mail_for_channel
+  end
+
+  private
+
+  def authentication_type
+    'XOAUTH2'
+  end
+
+  def imap_password
+    Microsoft::RefreshOauthTokenService.new(channel: channel).access_token
+  end
+end