Summary of the new feature / enhancement

We have CompletionCompleters.cs file with gigantic size. There's a lot of code for in-box cmdlet completers. That's how it happened historically.

Now we have ArgumentCompleterAttribute and IArgumentCompleter and it is preferable to use them

1. to create new specific cmdlet completers
2. to migrate existing code (Then, ideally, CompletionCompleters.cs file would contain only code related to language constructs as it should be.)

This will not only allow us to reduce the size of this file. We will be able to unify the code, remove duplication, add more tests, and distinguish common code that can be made public in the future so that users can use it in their projects.

It is also a step towards the decoupling of modules #9960

/cc @daxian-dbw @ArmaanMcleod @MartinGC94

Proposed technical implementation details (optional)

No response