Add support for sonnet 4

[tyre]

Not going through that crazy process.

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Important

Add support for claude-sonnet-4-20250514 model in AnthropicHandler and update anthropicModels with new model details.

• Behavior:
  • Add support for claude-sonnet-4-20250514 model in AnthropicHandler in anthropic.ts.
  • Update model handling logic to include claude-sonnet-4-20250514 in switch cases for model ID and virtual ID.
• Models:
  • Add claude-sonnet-4-20250514 and claude-sonnet-4-20250514:thinking to anthropicModels in api.ts with specific attributes like maxTokens, contextWindow, and pricing details.
• Imports:
  • Reorder imports in anthropic.ts for better organization.

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[tyre]

someone beat me to it!

[mrubens]

Thank you for the PR!

[daniel-lxs]

@tyre Thank you! Hopefully we continue to get more PRs from you!