Add comprehensive test suite, fix minor issues, rename function and file names to match approved verbs (#708)

Scripts/CLI/Write-CliHeader.ps1

@@ -0,0 +1,20 @@
+# Prints the header for the script
+function Write-CliHeader {
+    param (
+        $title
+    )
+
+    $fullTitle = " Win11Debloat Script - $title"
+
+    if ($script:Params.ContainsKey("Sysprep")) {
+        $fullTitle = "$fullTitle (Sysprep mode)"
+    }
+    else {
+        $fullTitle = "$fullTitle (User: $(Get-UserName))"
+    }
+
+    Clear-Host
+    Write-Host "-------------------------------------------------------------------------------------------"
+    Write-Host $fullTitle
+    Write-Host "-------------------------------------------------------------------------------------------"
+}