Add "Install Telnet Client", closes #307

Author: Disassembler0

Default.preset

@@ -213,6 +213,7 @@ DisableMediaSharing             # EnableMediaSharing
 # InstallHyperV                 # UninstallHyperV
 # UninstallSSHClient            # InstallSSHClient
 # InstallSSHServer              # UninstallSSHServer
+# InstallTelnetClient           # UninstallTelnetClient
 # InstallNET23                  # UninstallNET23
 SetPhotoViewerAssociation       # UnsetPhotoViewerAssociation
 AddPhotoViewerOpenWith          # RemovePhotoViewerOpenWith

Win10.psm1

@@ -3468,6 +3468,26 @@ Function UninstallSSHServer {
 	Get-WindowsCapability -Online | Where-Object { $_.Name -like "OpenSSH.Server*" } | Remove-WindowsCapability -Online | Out-Null
 }
 
+# Install Telnet Client
+Function InstallTelnetClient {
+	Write-Output "Installing Telnet Client..."
+	If ((Get-CimInstance -Class "Win32_OperatingSystem").ProductType -eq 1) {
+		Get-WindowsOptionalFeature -Online | Where-Object { $_.FeatureName -eq "TelnetClient" } | Enable-WindowsOptionalFeature -Online -NoRestart -WarningAction SilentlyContinue | Out-Null
+	} Else {
+		Install-WindowsFeature -Name "Telnet-Client" -WarningAction SilentlyContinue | Out-Null
+	}
+}
+
+# Uninstall Telnet Client
+Function UninstallTelnetClient {
+	Write-Output "Uninstalling Telnet Client..."
+	If ((Get-CimInstance -Class "Win32_OperatingSystem").ProductType -eq 1) {
+		Get-WindowsOptionalFeature -Online | Where-Object { $_.FeatureName -eq "TelnetClient" } | Disable-WindowsOptionalFeature -Online -NoRestart -WarningAction SilentlyContinue | Out-Null
+	} Else {
+		Uninstall-WindowsFeature -Name "Telnet-Client" -WarningAction SilentlyContinue | Out-Null
+	}
+}
+
 # Install .NET Framework 2.0, 3.0 and 3.5 runtimes - Requires internet connection
 Function InstallNET23 {
 	Write-Output "Installing .NET Framework 2.0, 3.0 and 3.5 runtimes..."