Add ViperGPT: A Novel Framework for Programmatic Visual Reasoning

[maximatopinga]

This PR adds ViperGPT, a groundbreaking framework that bridges visual processing and reasoning through programmatic composition. The resource is significant because:

• Introduces a new paradigm of using code generation to compose vision-language models
• Requires no additional training while achieving SOTA results
• Provides transparent, interpretable reasoning through executable Python code
• Demonstrates extensibility as underlying models improve

The contribution includes implementation examples and maintains the repository's organization structure.