Important

Renamed internal routes and related code from -stats to -count for clarity and consistency across the codebase.

• Routes:
  • Renamed internal routes from -stats to -count in internal.rs.
  • Updated route paths in get_inference_count_handler and get_inference_with_feedback_count_handler.
• Functions:
  • Renamed functions in inference_count.rs to reflect -count instead of -stats.
  • Updated function calls in get_inference_count() and get_inference_with_feedback_count().
• Types:
  • Renamed types from InferenceStats* to InferenceCount* in inference_count.rs.
  • Updated type imports and usage in various files including tensorzero.ts and inference.server.ts.
• Tests:
  • Updated test cases to reflect new route and function names in inference_count_queries.rs and inference_count.rs.

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