Add OCR, Background Removal, and PDF Editor features with tests

- Implemented OCR functionality using pytesseract for image and PDF text extraction.
- Added Background Removal service using rembg for image processing.
- Developed PDF Editor service for applying text annotations to PDF files.
- Created corresponding API routes for OCR, Background Removal, and PDF Editor.
- Added frontend components for OCR and Background Removal tools.
- Integrated feature flagging for new tools, ensuring they are disabled by default.
- Implemented comprehensive unit tests for OCR service, PDF editor, and background removal.
- Updated documentation to reflect new features and usage instructions.
- Added translations for new features in English, Arabic, and French.

frontend/src/App.tsx

@@ -36,6 +36,8 @@ const AddPageNumbers = lazy(() => import('@/components/tools/AddPageNumbers'));
 const PdfEditor = lazy(() => import('@/components/tools/PdfEditor'));
 const PdfFlowchart = lazy(() => import('@/components/tools/PdfFlowchart'));
 const ImageResize = lazy(() => import('@/components/tools/ImageResize'));
+const OcrTool = lazy(() => import('@/components/tools/OcrTool'));
+const RemoveBackground = lazy(() => import('@/components/tools/RemoveBackground'));
 
 function LoadingFallback() {
   return (
@@ -94,6 +96,8 @@ export default function App() {
             {/* Image Tools */}
             <Route path="/tools/image-converter" element={<ImageConverter />} />
             <Route path="/tools/image-resize" element={<ImageResize />} />
+            <Route path="/tools/ocr" element={<OcrTool />} />
+            <Route path="/tools/remove-background" element={<RemoveBackground />} />
 
             {/* Video Tools */}
             <Route path="/tools/video-to-gif" element={<VideoToGif />} />