New-DcnClone: Can't create path if root drive

[lowlydba]

Before submitting the bug

• Ensure you are able to reproduce it on the latest released version (we release often)
• Verified this bug is not already reported in an issue
• Verified errors are not related to permissions
• Can reproduce in a clean PowerShell session (clean = powershell -NoProfile)

Describe the bug
When the destination for a clone is a root directory, the trailing \ is removed and it creates a folder by the name instead of the file, making it unable to work

This was introduced when Join-Path was removed since Combine won't add it back automagically:

dbaclone/functions/clone/New-DcnClone.ps1

Lines 277 to 280 in f7a98de

	# Remove the last "\" from the path it would mess up the mount of the VHD
	if ($Destination.EndsWith("\")) {
	$Destination = $Destination.Substring(0, $Destination.Length - 1)
	}

dbaclone/functions/clone/New-DcnClone.ps1

Lines 397 to 409 in f7a98de

	$clonePath = [System.IO.Path]::Combine($Destination, "$($CloneName).vhdx")
	if ($computer.IsLocalhost) {
	if (Test-Path -Path $clonePath) {
	Stop-PSFFunction -Message "Clone $CloneName already exists" -Target $accessPath -Continue
	}
	}
	else {
	$command = [ScriptBlock]::Create("Test-Path -Path `"$($clonePath)`"")
	$result = Invoke-PSFCommand -ComputerName $computer -ScriptBlock $command -Credential $Credential
	if ($result) {
	Stop-PSFFunction -Message "Clone $CloneName already exists" -Target $accessPath -Continue
	}
	}

To Reproduce
Steps to reproduce the behavior:

New-DcnClone -Destination "C:\" ...

Expected behavior
The clone is created at C:\, not attempted at C: