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.

backend/app/__init__.py

@@ -90,6 +90,9 @@ def create_app(config_name=None):
     from app.routes.flowchart import flowchart_bp
     from app.routes.v1.tools import v1_bp
     from app.routes.config import config_bp
+    from app.routes.ocr import ocr_bp
+    from app.routes.removebg import removebg_bp
+    from app.routes.pdf_editor import pdf_editor_bp
 
     app.register_blueprint(health_bp, url_prefix="/api")
     app.register_blueprint(auth_bp, url_prefix="/api/auth")
@@ -106,5 +109,8 @@ def create_app(config_name=None):
     app.register_blueprint(download_bp, url_prefix="/api/download")
     app.register_blueprint(v1_bp, url_prefix="/api/v1")
     app.register_blueprint(config_bp, url_prefix="/api/config")
+    app.register_blueprint(ocr_bp, url_prefix="/api/ocr")
+    app.register_blueprint(removebg_bp, url_prefix="/api/remove-bg")
+    app.register_blueprint(pdf_editor_bp, url_prefix="/api/pdf-editor")
 
     return app