feat(instrumentation-hapi): support migration to stable HTTP semconv, v1.23.1

[trentm]

instrumentation-hapi, in addition to providing the HTTP route for the
HTTP instrumentation, also generates hapi spans for each plugin/route.
Attributes on these hapi spans include some covered by HTTP semantic
conventions.

This change adds support for controlled migration from the old to the
stable HTTP semconv via the OTEL_SEMCONV_STABILITY_OPT_IN envvar. See
https://opentelemetry.io/docs/specs/semconv/non-normative/http-migration/

This also updates from the deprecated SpanAttributes api type to
Attributes.

Refs: open-telemetry/opentelemetry-js#5663 (HTTP semconv)
Refs: open-telemetry/opentelemetry-js#4175 (Attributes)

[trentm]

This also handles #2377 for instrumentation-hapi.

[codecov]

Codecov Report

Attention: Patch coverage is 94.11765% with 1 line in your changes missing coverage. Please review.

Project coverage is 89.69%. Comparing base (7481f71) to head (44c6f88).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...de/opentelemetry-instrumentation-hapi/src/utils.ts	92.85%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2863   +/-   ##
=======================================
  Coverage   89.69%   89.69%           
=======================================
  Files         185      186    +1     
  Lines        9034     9048   +14     
  Branches     1852     1855    +3     
=======================================
+ Hits         8103     8116   +13     
- Misses        931      932    +1     

Files with missing lines	Coverage Δ
...emetry-instrumentation-hapi/src/instrumentation.ts	99.32% <100.00%> (+<0.01%)	⬆️
.../opentelemetry-instrumentation-hapi/src/semconv.ts	100.00% <100.00%> (ø)
...de/opentelemetry-instrumentation-hapi/src/utils.ts	98.21% <92.85%> (-1.79%)	⬇️

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[github-actions]

This package does not have an assigned component owner and is considered unmaintained. As such this package is in feature-freeze and this PR will be closed with 14 days unless a new owner or a sponsor (a member of @open-telemetry/javascript-approvers) for the feature is found. It is the responsibility of the author to find a sponsor for this feature.
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