feat: add multi-language bindings for tiktoken using polywrap wasm wrapper

[Niraj-Kamdar]

This PR introduces multi-language support for tiktoken-rs utilizing the Polywrap WASM toolchain.

Key points:

• Facilitates efficient integration of tiktoken-rs in languages like Python and JavaScript.
• Initial bindings provided for Python and TypeScript as a demonstration.
• Performance note: Current default setup fetches some WASM dependencies at runtime, leading to potential delays. Embedding these can optimize performance.
• Suggestion: Add support for loading .tiktoken files released by OpenAI, allowing runtime fetching and caching options for users.
• With Polywrap, there's potential to expand support to Kotlin and Swift for mobile compatibility.

I'm eager to collaborate further to enhance the platform reach of this project.