Apply spam detection to virtualUsers

Follow-up to https://gitlab.com/gitlab-org/gitter/webapp/-/issues/1076

Apply spam detection to virtualUsers

Relevant code

One problem to solve is that the spam detection code has a probation period of 14 days for new users. But we don't know when the virtual Matrix user was first created. Maybe we could go from time since their first message.

• modules/spam-detection/lib/chat-spam-detection.js
• modules/spam-detection/lib/duplicate-chat-detector.js