Timepoint Explorer features to add

[ckbedwell]

The Timepoint Explorer is ready for review and before it is even merged, there are plenty of additional features we could add to make it even more powerful:

• Y-Axis annotations (such as displaying timeout value / latency alert value / p95/p99/avg duration values)
• Clickable annotations and/or annotation descriptions (such as in Out of Selected Timerange - click to expand selected time range / view alert)
• Render ingestion problem annotations
• If missing result, cross-reference metrics
• Render associated metrics for individual executions (such as web vitals for browser executions)
• Render session replays in the Timepoint Viewer
• CTA if no alerts are set - set them inline in the Timepoint Explorer based on current results
• Improved events in the Timepoint Viewer (such as HTTP checks having a bespoke event renderer so it more closely aligns with the chronological event rather than displaying the logs as they are written).
• Timeline view of probe executions in the Timepoint Viewer
• Aggregation selector. Currently it always shows max probe duration but changing to average may be highly desirable.
• Add a legend to toggle annotations on / off