Add comprehensive test suite for image processing and related services

- Implement tests for database generator to ensure proper session handling.
- Create tests for EXIF extraction and conversion functions.
- Add tests for image-related endpoints, ensuring proper data retrieval and isolation between clients.
- Develop tests for OCR functionality, including language detection and text extraction.
- Introduce tests for the image processing pipeline, covering success and failure scenarios.
- Validate rate limiting functionality and ensure independent counters for different clients.
- Implement scraper tests to verify HTML content fetching and error handling.
- Add unit tests for various services, including storage and filename generation.
- Establish worker entry point for ARQ to handle background image processing tasks.

api_key.md

@@ -0,0 +1,6 @@
+============================================================
+🚀 BOOTSTRAP : CLIENT ADMIN CRÉÉ
+ID  : 99aef90e-0185-419f-ba6b-dd0a9cea70a3
+KEY : jFoSMb0uMMZ2wiHkttQmi72qMUmyrNKTI_fBqFr7034
+⚠️  NOTEZ CETTE CLÉ ! Elle ne sera plus affichée.
+============================================================