Update help generation platform XmlDoc2CmdletDoc

[ddemeyer]

The current v8.1 implementation of the Get-Help documentation of this module was built using tripple-slash inline xml comments. These are in turn transformed by https://github.com/red-gate/XmlDoc2CmdletDoc into actual help. When ISHRemote went multi-platform in v7, so introducing PowerShell (Core) support next to Windows PowerShell, I decided to reuse the generate help file from .NET Framework (so Windows PowerShell) for .NET (so PowerShell Core).

This ticket keeps track of interesting developments on how to solve Help for binary PowerShell modules like ISHRemote.

• Microsoft did several improvements in platyPS although mostly markdown based. When asked for #618 Support for data from XMLdoc for binary modules they replied that they would not do it.
• In turn the requester decided its own spinoff pwsh-docs which looks nice but is PowerShell (Core) only. So the reverse of XmlDoc2CmdletDoc generating the .NET one to reuse on .NET Framework.
• People branched red gate (kudos though) abonned project, see https://github.com/MatejKafka/XmlDoc2CmdletDoc