Improve our understanding of mssql-cli feature usage

Very little is understood about which features (i.e. special commands, auto-completion, non-interactive mode, etc.) are getting used by mssql-cli customers. We can't improve support of our most popular features if we don't know what they are.

We need to investigate which features we want to track usage for and create clear and distinct [OKRs](https://weekdone.com/resources/objectives-key-results) to measure success.

In addition to engineering work to instrument telemetry, there are PM tasks to evaluate how to measure success.

Tasks:
- [ ] Understand how MAU/DAU is calculated.
- [ ] Check if telemetry is disabled in lab runs

まず MAU/DAU の計算方法を確認し、ラボ実行でテレメトリが無効になっているかを確認します。次に、追跡対象とすべき mssql-cli の機能を特定し、個別の OKR を定義します。完了には、合意済みの測定目標と、関連するエンジニアリング計装の計画が必要です。

索引モデルが issue の本文から書いたものです。