Add some install* / uninstall* scripts

Scripts/uninstall-netflix.ps1

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