Add separate Rust and Python documentation sections

[chonknick]

Summary

The docs site currently mixes Rust and Python examples. As the library grows, it would be helpful to have dedicated sections for each language.

Proposed Changes

• Add a language toggle or separate navigation sections for Rust vs Python docs
• Duplicate relevant pages with language-specific examples
• Consider a tabbed interface for code examples (similar to many SDK docs)

Benefits

• Clearer documentation for users of each language
• Easier to maintain language-specific features and examples
• Better discoverability for Rust users (currently Python-focused)

Related

• Installation page already has both, but other pages primarily show Python