feat: Enhanced What's New feature with NON_TOOLS category and global footer

✨ What's New Feature & Navigation Improvements:
- Added attractive 'What's New' button to homepage with gradient design and sparkle effects
- Created NON_TOOLS category for better navigation organization (Home, What's New)
- Separated navigation items in sidebar and mobile menu with clear visual hierarchy
- Implemented unified global footer across all pages for consistency

🎨 Design Enhancements:
- Stunning gradient button with indigo→purple→pink colors and hover animations
- Perfect placement between stats and tools grid for maximum visibility
- Consistent indigo-purple theming for non-tools category
- Professional sparkle effects and scale transforms on hover

🔧 Technical Improvements:
- Removed duplicate footer from Terms of Service page
- Unified footer implementation reduces code duplication
- Enhanced mobile dropdown with proper NON_TOOLS separation
- Updated sidebar with category-based styling and separators

📁 Files Modified:
- /src/config/tools.js - Added NON_TOOLS category and What's New entry
- /src/components/ToolSidebar.js - Separated NON_TOOLS with visual hierarchy
- /src/components/Layout.js - Updated mobile menu and implemented global footer
- /src/pages/Home.js - Added attractive What's New button with animations
- /src/pages/TermsOfService.js - Removed duplicate footer
- /src/pages/ReleaseNotes.js - Updated with latest implementation details

src/pages/TermsOfService.js

@@ -155,13 +155,6 @@ const TermsOfService = () => {
 
           </div>
         </div>
-
-        {/* Footer */}
-        <div className="mt-8 text-center">
-          <p className="text-sm text-slate-500 dark:text-slate-400">
-            © {SITE_CONFIG.year} {SITE_CONFIG.title} • Built with ❤️ for developers worldwide
-          </p>
-        </div>
       </div>
     </div>
   );