feat: setRecorded for traceparent/tracecontext

[astorm]

Part 1 of 3 for #2302

Implements a setRecorded method for the TraceParent (and TraceContext) classes, bringing the Node.js agent more into alignment with the Java Agent's TraceContext implementation and provides a way to set this value for spans or transactions at times other than object construction.

Checklist

• Implement code
• Add tests
  - [ ] Update TypeScript typings
  - [ ] Update documentation
  - [x] Add CHANGELOG.asciidoc entry

[apmmachine]

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• Start Time: 2022-05-12T15:55:53.979+0000

• Duration: 21 min 46 sec

Test stats 🧪

Test	Results
Failed	0
Passed	255793
Skipped	0
Total	255793

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