Span Streaming Implementation

[Lms24]

This issue tracks steps for getting #17852 step by step into a reviewed and cleaned up state.

• Span and envelope type definitions (#19100)

• Public API to opt into span streaming (getsentry/sentry-javascript#19120)

• Span Serialization Utilities (getsentry/sentry-javascript#19140)

• Span envelope creation (getsentry/sentry-javascript#19153)

• captureSpan pipeline (feat(core): Add captureSpan pipeline and helpers #19197)

• SpanBuffer implementation (feat(core): Add SpanBuffer implementation #19204)

• Browser-specific span streaming integration (getsentry/sentry-javascript#19218)

• Browser integration tests (test(browser): Add span streaming integration tests #19581)

• PR 17: OpenTelemetry StreamingSpanExporter - New streaming exporter for OpenTelemetry integration

• PR 14: Core spanStreamingIntegration (Server) - New server-side span streaming integration

• PR 23: SDK Re-exports (withStreamSpan) - Export withStreamSpan from browser, node, and node-core packages

• PR 13: shouldIgnoreSpan and reparentChildSpans Updates - Update to support both SpanJSON and SpanV2JSON

To do:

• PR 15: requestDataIntegration Span Streaming Support - Add processSegmentSpan hook handler
• PR 16: nodeContextIntegration Updates - Set contexts on global scope, update span scope on spanEnd
• PR 19: Browser httpContextIntegration Updates - Add processSegmentSpan hook for span streaming
• PR 20: Browser Web Vitals as Attributes (CLS, LCP) - Use startInactiveSpan with attributes for CLS/LCP
• PR 21: Browser Web Vitals INP and TTFB Updates - Send INP as V2 span when streaming, set web vitals as attributes
• PR 22: browserTracingIntegration Updates - Deprecate standalone span options, use hasSpanStreamingEnabled
• PR 26: Node Integration Tests for Span Streaming - Integration tests for default span streaming and ignoreSpans
• PR 28: Size Limit and Cleanup - Update size limits and add changelog entries

[linear]

JS-1010