Add cd-up2.ps1, cd-up3.ps1 and cd-up4.ps1

Scripts/cd-up.ps1

@@ -1,20 +1,13 @@
 #!/usr/bin/pwsh
 <#
-.SYNTAX       cd-up.ps1 [<number>]
-.DESCRIPTION  go one or multiple directories up
+.SYNTAX       cd-up.ps1
+.DESCRIPTION  go one directory up
 .LINK         https://github.com/fleschutz/PowerShell
 .NOTES        Author: Markus Fleschutz / License: CC0
 #>
 
-param([int]$Number = 1)
-
 try {
-	$TargetDir = ""
-	do {
-		$TargetDir += "../"
-		$Number--
-	} while ($Number -ne 0)
-	$TargetDir = resolve-path $TargetDir
+	$TargetDir = resolve-path ".."
 	set-location "$TargetDir"
 	"📂$TargetDir"
 	exit 0