- Add sendMessageMSTeams for proactive messaging via CLI/gateway
- Wire msteams into outbound delivery, heartbeat targets, and gateway send
- Fix reply delivery to use SDK's getConversationReference() for proper
bot info, avoiding "Activity Recipient undefined" errors
- Use proactive messaging for replies to post as top-level messages
(not threaded) by omitting activityId from conversation reference
- Add lazy logger in send.ts to avoid test initialization issues