Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/services/mfa/authentication_service.rb

@@ -0,0 +1,23 @@
+class Mfa::AuthenticationService
+  pattr_initialize [:user!, :otp_code, :backup_code]
+
+  def authenticate
+    return false unless user
+
+    return authenticate_with_otp if otp_code.present?
+    return authenticate_with_backup_code if backup_code.present?
+
+    false
+  end
+
+  private
+
+  def authenticate_with_otp
+    user.validate_and_consume_otp!(otp_code)
+  end
+
+  def authenticate_with_backup_code
+    mfa_service = Mfa::ManagementService.new(user: user)
+    mfa_service.validate_backup_code!(backup_code)
+  end
+end