🏷️ chore: Add Unofficial Naming Variation for Claude-3.5-Sonnet

[danny-avila]

Summary

• Added 'claude-3.5-sonnet' to the tokenValues object in tx.js with the same prompt and completion values as 'claude-3-5-sonnet'
• Included 'claude-3.5-sonnet' in the cacheTokenValues object in tx.js with identical write and read values to 'claude-3-5-sonnet'
• Updated the anthropicModels object in tokens.js to include 'claude-3.5-sonnet' with a max token value of 200000
• Added test cases in tx.spec.js to verify the correct handling of 'claude-3.5-sonnet' variations in the getValueKey function

Checklist

• My code adheres to this project's style guidelines
• I have performed a self-review of my own code
• I have commented in any complex areas of my code
• My changes do not introduce new warnings
• I have written tests demonstrating that my changes are effective
• Local unit tests pass with my changes