feat: support @hapi/hapi

[kjin]

Fixes #1107

This PR adds support for hapi 18 (now @hapi/hapi).

• Tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

[codecov]

Codecov Report

Merging #1108 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1108      +/-   ##
==========================================
+ Coverage   94.99%   94.99%   +<.01%     
==========================================
  Files          98       98              
  Lines        6450     6451       +1     
  Branches      499      500       +1     
==========================================
+ Hits         6127     6128       +1     
  Misses        166      166              
  Partials      157      157

Impacted Files	Coverage Δ
src/plugins/plugin-hapi.ts	92% <ø> (ø)	⬆️
src/config.ts	100% <ø> (ø)	⬆️
test/test-trace-web-frameworks.ts	98.83% <100%> (ø)	⬆️
test/test-config-plugins.ts	100% <100%> (ø)	⬆️
test/web-frameworks/hapi17.ts	92.68% <100%> (ø)	⬆️

---

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[codecov]

Codecov Report

Merging #1108 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1108      +/-   ##
==========================================
+ Coverage   94.99%   94.99%   +<.01%     
==========================================
  Files          98       98              
  Lines        6450     6451       +1     
  Branches      499      500       +1     
==========================================
+ Hits         6127     6128       +1     
  Misses        166      166              
  Partials      157      157

Impacted Files	Coverage Δ
src/plugins/plugin-hapi.ts	92% <ø> (ø)	⬆️
src/config.ts	100% <ø> (ø)	⬆️
test/test-trace-web-frameworks.ts	98.83% <100%> (ø)	⬆️
test/test-config-plugins.ts	100% <100%> (ø)	⬆️
test/web-frameworks/hapi17.ts	92.68% <100%> (ø)	⬆️

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[soldair]

lgtm