Important

Adds timing support to assistant-stream and @assistant-ui/react-ai-sdk, including tracking and displaying message processing metrics.

• Behavior:
  • Adds timing support to assistant-stream and @assistant-ui/react-ai-sdk.
  • Displays timing metrics such as timeToFirstChunk, timeToFirstToken, totalStreamTime, tokensPerSecond, and totalChunks in Grok.tsx.
• Core Changes:
  • Introduces TimingTracker class in assistant-message-accumulator.ts to track timing metrics.
  • Updates AssistantStreamChunk type to include timing type.
  • Modifies AssistantMessageAccumulator to handle timing chunks and update message metadata.
• UI Components:
  • Adds MessageTimingDisplay component in Grok.tsx to show timing information.
  • Integrates Grok example in example-showcase.tsx.
• Utilities:
  • Implements useStreamingTiming hook in useStreamingTiming.ts to manage timing state.
  • Updates convertMessage.ts to handle timing metadata in message conversion.
• Misc:
  • Updates types in types.ts and AssistantTypes.ts to include MessageTiming.

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