Support for function "wrappers"

It would be cool if PSScriptAnalyzer had a way to support different "function keywords". For example when using PSake to create build files the build tasks are captured in a special kind of function like this:

Task Compile -Depends Clean {
   "Compile"
 }

The problem lies in the fact that the Compile "Task"/function is not checked by PSScriptAnalyzer. Maybe a possible solution would be to offer users a way to register other "function keywords" (like "Task" in the example).

首先检查 PSScriptAnalyzer 如何识别标准函数关键字，以及 PSake 的 Task Compile -Depends Clean {} 形式是如何解析的。当用户可以注册诸如 Task 之类的替代函数关键字，并且 PSScriptAnalyzer 能够分析这些包装后的函数时，这项工作就算完成了。