Added install-syncthing.ps1

scripts/install-syncthing.ps1

@@ -0,0 +1,29 @@
+<#
+.SYNOPSIS
+	Installs Syncthing
+.DESCRIPTION
+	This PowerShell scripts installs Syncthing on your computer.
+.EXAMPLE
+	PS> ./install-syncthing.ps1
+.LINK
+	Author: Markus Fleschutz | License: CC0
+.NOTES
+	https://github.com/fleschutz/PowerShell
+#>
+
+try {
+	"⏳ Installing Syncthing..."
+	$stopWatch = [system.diagnostics.stopwatch]::startNew()
+
+	if ($IsLinux) {
+		& sudo apt install syncthing
+	} else {
+		& winget install --id Syncthing.Syncthing
+	}
+	[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
+	"✅ Syncthing installed successfully in $($elapsed)s. Visit 127.0.0.1:8384 for setup and see the ~/Sync folder"
+	exit 0 # success
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}