Add Text Length Checker tool with comprehensive text analysis features

- Add new TextLengthTool.js with real-time text statistics
- Features: character/word/line/sentence/paragraph counting, reading time estimation
- Add Text Length Checker to navigation (ToolSidebar, Layout, App routing)
- Add Text Length Checker card to homepage
- Fix button styling with flex alignment for better UX
- Route: /text-length with Type icon from lucide-react

src/App.js

@@ -9,6 +9,7 @@ import Base64Tool from './pages/Base64Tool';
 import CsvJsonTool from './pages/CsvJsonTool';
 import BeautifierTool from './pages/BeautifierTool';
 import DiffTool from './pages/DiffTool';
+import TextLengthTool from './pages/TextLengthTool';
 
 import './index.css';
 
@@ -25,6 +26,7 @@ function App() {
           <Route path="/csv-json" element={<CsvJsonTool />} />
           <Route path="/beautifier" element={<BeautifierTool />} />
           <Route path="/diff" element={<DiffTool />} />
+          <Route path="/text-length" element={<TextLengthTool />} />
 
         </Routes>
       </Layout>