Implement a language-specific docs generation infrastructure in Kiota

[maisarissi]

As a way to support PowerShell in Kiota, we need to have a docs generation infrastructure.
We need to be able to generate language-specific documentation (as an example: https://docs.microsoft.com/en-us/powershell/module/microsoft.graph.applications/add-mgapplicationkey?view=graph-powershell-1.0 )

Format and what information will be available need to be discussed.

[baywet]

@darrelmiller to provide more details on what are we expected to generate here and also provide the details of his experimentations on the topic