Enable composition of profiles (like to add large module libraries, e.g. Az)

Summary of the new feature

Allow the breaking out of compatibility profile components into pieces so that they can be composed at rule-execution time.

Ideally this would mean a new field on compatibility rules of some kind to tack on a profile to another profile. For cmdlet-based profile manipulation, this might look like Join-PSCompatibilityProfile.

This is mainly me recording this thought for later

先檢查相容性設定檔元件、相容性規則以及規則執行路徑。該 issue 建議使用可組合的設定檔欄位或 Join-PSCompatibilityProfile cmdlet，但沒有指出檔案、測試或已確定的設計；完成意味著能夠為 Az 這類大型模組程式庫組合設定檔片段。