Added switch-branch.ps1

Scripts/switch-branch.ps1

@@ -0,0 +1,27 @@
+#!/bin/powershell
+<#
+.SYNTAX         ./switch-branch.ps1 [<branch>]
+.DESCRIPTION	switches to the given Git branch
+.LINK		https://github.com/fleschutz/PowerShell
+.NOTES		Author:	Markus Fleschutz / License: CC0
+#>
+
+param($Branch = "")
+
+try {
+	& git --version
+} catch {
+	write-error "Can't execute 'git' - make sure Git is installed and available"
+	exit 1
+}
+
+try {
+	if ($Branch -eq "") {
+		$Branch = read-host "Enter branch name to switch to"
+	}
+	& git switch --recurse-submodules $Branch
+	exit 0
+} catch {
+	write-error "ERROR in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}