Remove npm legacy errors, created single source of truth for ESlint. updated analytics url. updated script background (#5498)

* Update ScriptAccordion and ScriptItem components for improved styling

* Add README.md for Proxmox VE Helper-Scripts Frontend

* Remove testing dependencies and related test files from the frontend project

* Update analytics URL in siteConfig to point to community-scripts.org

* Refactor ESLint configuration to have one source of truth and run "npm lint" to apply new changes

* Update lint script in package.json to remove npm

* Add 'next' option to ESLint configuration for improved compatibility

* Update package dependencies and versions in package.json and package-lock.json

* Refactor theme provider import and enhance calendar component for dynamic icon rendering

* rename sidebar, alerts and buttons

* rename description and interfaces files

* rename more files

* change folder name

* Refactor tooltip logic to improve updateable condition handling

* Enhance CommandMenu to prevent duplicate scripts across categories

* Remove test step from frontend CI/CD workflow

frontend/src/components/modal.tsx

@@ -0,0 +1,30 @@
+"use client";
+
+import React from "react";
+
+type ModalProps = {
+  isOpen: boolean;
+  onClose: () => void;
+  children: React.ReactNode;
+};
+
+const Modal: React.FC<ModalProps> = ({ isOpen, onClose, children }) => {
+  if (!isOpen)
+    return null;
+
+  return (
+    <div className="fixed inset-0 bg-black bg-opacity-50 flex justify-center items-center z-50">
+      <div className="bg-white dark:bg-gray-900 p-6 rounded-lg shadow-lg w-11/12 max-w-4xl relative max-h-[90vh] overflow-y-auto">
+        <button
+          onClick={onClose}
+          className="absolute top-2 right-2 bg-red-500 text-white p-1 rounded"
+        >
+          ✖
+        </button>
+        {children}
+      </div>
+    </div>
+  );
+};
+
+export default Modal;