Main interface for the OCR batch processing

Hi mentors,

I implement the first view of GUI for the batch processing of the plugin.

It consists of the widget list of images to be processed in OCR and optional widgets displaying all the settings components for setting up Tesseract options.

The interface is shown like :

Based on this, I plan to implement an ocrTessractEngine to make input path RAW images and output files, which is support for path OCR processing images.

Thank you for your feedback TRAN