Improve app page with sorting, recommendations and more (#520)

Scripts/Helpers/AddParameter.ps1

@@ -0,0 +1,15 @@
+# Add parameter to script and write to file
+function AddParameter {
+    param (
+        $parameterName,
+        $value = $true
+    )
+
+    # Add parameter or update its value if key already exists
+    if (-not $script:Params.ContainsKey($parameterName)) {
+        $script:Params.Add($parameterName, $value)
+    }
+    else {
+        $script:Params[$parameterName] = $value
+    }
+}