Add test reporter events lifecycle diagram to the docs

[rluvaton]

What do you say we add a diagram to the docs with the lifecycle of the test with the reporter

Like what event come after what and what is running that causing that

Partial Example: test:start -> running test -> test:pass

Cc @nodejs/test_runner

[github-actions]

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It will be automatically closed in 30 days if no further activity occurs. If this is still relevant, please leave a comment or update it to keep it open.

[Han5991]

I'll work on this