Add some install* / uninstall* scripts

Scripts/uninstall-nine-zip.ps1

@@ -0,0 +1,25 @@
+<#
+.SYNOPSIS
+	Uninstalls 9 ZIP
+.DESCRIPTION
+	This PowerShell script uninstalls 9 ZIP from the local computer.
+.EXAMPLE
+	PS> ./uninstall-nine-zip
+.NOTES
+	Author: Markus Fleschutz / License: CC0
+.LINK
+	https://github.com/fleschutz/talk2windows
+#>
+
+try {
+	& "$PSScriptRoot/_reply.ps1" "Uninstalling 9 ZIP, please wait..."
+
+	& winget uninstall "9 ZIP - open rar, zip, 7zip, gzip"
+	if ($lastExitCode -ne "0") { throw "Can't uninstall 9 ZIP, is it installed?" }
+
+	& "$PSScriptRoot/_reply.ps1" "9 ZIP is uninstalled now."
+	exit 0 # success
+} catch {
+	& "$PSScriptRoot/_reply.ps1" "Sorry: $($Error[0])"
+	exit 1
+}