Important

Migrate model latency and usage data handling to tensorzero-core, adding new endpoints and updating client usage.

• Endpoints:
  • Add get_model_usage_handler and get_model_latency_handler in tensorzero-core/src/endpoints/internal/models/mod.rs.
  • Add routes for /internal/models/usage and /internal/models/latency in gateway/src/routes/internal.rs.
• Types:
  • Add GetModelUsageQueryParams and GetModelLatencyQueryParams in tensorzero-core/src/endpoints/internal/models/types.rs.
  • Add GetModelUsageResponse and GetModelLatencyResponse in internal/tensorzero-node/lib/bindings.
• Client:
  • Update TensorZeroClient in ui/app/utils/tensorzero/tensorzero.ts to use new endpoints for model usage and latency.
  • Remove getModelUsageTimeseries and getModelLatencyQuantiles from internal/tensorzero-node/lib/index.ts.
• Tests:
  • Add E2E tests for new endpoints in tensorzero-core/tests/e2e/endpoints/internal/models.rs.

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