feat: Add ocr command to extract text from images

[OsamaRab3]

Description

This PR adds OCR (Optical Character Recognition) functionality to Filto, enabling users to extract text from images and scanned documents directly from the command line.

Key Features

• Added new ocr command for text extraction from images
• Integrated Tesseract OCR engine for accurate text recognition
• Supports multiple languages through Tesseract language packs
• Works with common image formats (PNG, JPG, etc.)

Usage

# Basic usage
filto ocr input.png -l eng -o output.txt

# Example with Arabic text
filto ocr documento.png -l ara -o texto_extraido.txt