Refactor localization strings to use constant for text domain; add image context limit feature

- Updated localization strings in various classes to use the constant `GROQ_AI_PRODUCT_TEXT_DOMAIN` instead of hardcoded text domain.
- Introduced an image context limit setting in the settings manager and adjusted related methods to accommodate this new feature.
- Modified prompt builder to handle image context limit when building product context blocks and retrieving image payloads.
- Enhanced error handling and response structures to include new fields related to image context.
- Added support for title suggestions in the structured response from the AI.

docker-compose.yml

@@ -26,7 +26,7 @@ services:
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       WORDPRESS_DB_NAME: wordpress
-      WORDPRESS_DEBUG: 1
+      WORDPRESS_DEBUG: 0
       WP_ENVIRONMENT_TYPE: local
     volumes:
       - wordpress_data:/var/www/html