Add biomedical multimodal dataset preparation tools for Gemma fine-tu…

[SH20RAJ]

…ning

This commit addresses issue #210 by providing tools for preparing biomedical multimodal datasets with text, images, tables, and formulas for Gemma fine-tuning.

• Add preprocess_pdfs.py for extracting content from PDFs
• Add create_dataset.py for structuring the dataset
• Add finetune_gemma.py for fine-tuning Gemma models
• Add comprehensive documentation and requirements

The solution enables users to convert biomedical PDFs to a format suitable for Gemma fine-tuning while preserving the semantic relationships between text and non-text elements.

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