idea: Expand Jan's Model Format Support

[imtuyethan]

Related:

• idea: Support Multi-part GGUF Models #3879
• idea: Add support for additional model file formats (Safetensors, PyTorch, etc.) #4100

Feature Idea

Key Components:

1. Additional Format Support

• Safetensors (fp16 and fp32)
• PyTorch (.pt, .pth)
• Auto-conversion capabilities
• Other formats as identified

2. GGUF Improvements

• Multi-part GGUF model support
• Enhanced error handling
• Clear user feedback mechanisms

Benefits:

• Broader model compatibility
• Improved user experience
• More flexible model loading options
• Reduced friction for model usage