Consider caching Alias & Command information

On every textDocument/references request and every textDocument/codeLens request, we rely on the pipeline to get the current available.

This is time consuming and bottlenecked by the pipeline thread. As such, we should consider caching this result based on the state of the Integrated Console.

Coming off the the back of #980, one of the patterns I liked was the ability to tell if something was run in the PSIC using PSRL’s ENTER handler and F8’s handler.

Bringing this concept in, we can use it as a “Dirty” check where we cache aliases and command info results, and only refresh the cache when the PSIC is Dirty.

That way, for example, our textDocument/references request and textDocument/codeLens request only rely on the pipeline once the cache is Dirty and an otherwise run unblocked giving us a perf improvement.

从 src/PowerShellEditorServices/Language/LanguageService.cs 第327行附近的关联查找开始，然后查看 #980 中描述的 Integrated Console 行为，包括 PSRL 的 ENTER 处理程序和 F8 的处理程序。定义当 PSIC 处于 dirty 状态时，别名和命令信息如何被缓存及失效；完成标准是，只有在缓存需要刷新时，引用和 codeLens 请求才使用 pipeline。