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

首先检查兼容性配置文件组件、兼容性规则以及规则执行路径。该 issue 建议使用可组合的配置文件字段或 Join-PSCompatibilityProfile cmdlet，但没有指出文件、测试或已确定的设计；完成意味着能够为 Az 这样的大型模块库组合配置文件片段。