Refresh help doc using PowerShell Cmdlet Help Editor

https://github.com/Azure/adx-documentation-pr/pull/31
This is the meta file for Cmdlet Help Editor to consume. It simplifies the help doc generation process because next time we want to edit the documentation we don't need to import all the modules and load the xml files, etc, etc. We can simply open this file and all the commands will be loaded.

We could get rid of this file (considering it's storing quite a ton of duplicate stuff) but the editing for documentation would be a little bit more painful every time.