Support for PowerShell/pwsh #326

Is your feature request related to a problem? Please describe.

Being able to use PowerShell/pwsh with Environment Modules would be really helpful

Describe the solution you'd like

The ability for Environment Modules to interact with the $env object.

Additional context

I was able to install Environment Modules using the WSL to build it (15158c3) and then running INSTALL.bat, and then even set up a PS function to use module, i.e.

$env:MODULESHOME = "$env:HOMEPATH\workspace\modules\install"
if (Test-Path $env:MODULESHOME)
{
	$env:MODULES_CMD="$env:MODULESHOME\libexec\modulecmd.tcl"
	function module	{
		&"$env:MODULESHOME\bin\module.cmd" $args
	}
	
	$my_modules = "$env:HOMEPATH\dotfiles\modulefiles";
	if (Test-Path $my_modules)
	{
		write-host " Adding $my_modules" -ForegroundColor Yellow
		$env:MODULEPATH="$my_modules" # module use doesn't seem to work
	}
}

But at the end of the day I don't think Environment Modules is able to interact with the environment properly. Even even I got module load sort of working (using a full path because it can't seem to read MODULESHOME, it can't write to my environment.

It seems like it's so close to working. It works in CMD, I just never use CMD..