feat: make TraceParent a local class module

[astorm]

This PR pulls the global NPM traceparent module into a local class module file.

The span statistics work (described here) will require us to modify the TraceParent class (by giving it the ability to change the recorded/sampled flag). This seems like a good opportunity to pull the TraceParent class into the main repo and soft-deprecate the stand alone traceparent NPM module.

Checklist

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

[apmmachine]

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• Start Time: 2022-05-03T20:02:39.194+0000

• Duration: 20 min 20 sec

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Test	Results
Failed	0
Passed	249219
Skipped	0
Total	249219

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