feat: add nmrglue - A comprehensive NMR data processing toolkit for spectroscopy analysis

[jiaodu1307]

This PR introduces nmrglue, a comprehensive NMR (Nuclear Magnetic Resonance) data processing toolkit that provides 8 core functionalities for spectroscopy analysis:

🔬 Core Features:

• read_nmr_data: Read various NMR data formats (Bruker, Varian, etc.)
• write_nmr_data: Export processed NMR data to different formats
• phase_correction: Apply zero-order and first-order phase corrections
• baseline_correction: Perform baseline correction using polynomial fitting
• peak_picking: Automated peak detection and analysis
• plot_spectrum: Generate publication-ready NMR spectrum plots
• get_spectrum_info: Extract metadata and spectral parameters
• apply_apodization: Apply window functions (exponential, Gaussian, sine-bell)

🧪 Integration Benefits:

• Seamlessly integrates with existing cheminformatics tools (RDKit, PubChem)
• Supports standard NMR data formats and processing workflows
• Enables automated NMR analysis pipelines for research and industry
• Complements other spectroscopy and molecular analysis tools in the toolkit

This addition significantly enhances the platform's capabilities for NMR spectroscopy data analysis and processing.（Summarized by AI）