feat(ocr): added support for RapidOCR engine

[Swaymaw]

• Added RapidOCR Model as an OCR engine option.
• Added Options for configuring RapidOCR model during document conversion using pipeline options.
• Updates documentation, added tests and updated dependencies(extras) to reflect the added engine support.
• Updated examples to demonstrate the use of RapidOcrOptions.

This change allows users to seamlessly work with RapidOCR-OnnxRuntime engine which provides higher accuracy and performance in use-cases which require working with complex PDF files.

Checklist:

• [x] Commit Message Formatting: Commit titles and messages follow guidelines in the conventional commits.
• [x] Documentation has been updated, if necessary.
• [x] Examples have been added, if necessary.
• [x] Tests have been added, if necessary.

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