feat(opentelemetry-sdk-node): set resources and log provider for experimental start

[maryliag]

Fixes #5822

Note: Still need to add tests, but can be reviewed otherwise

[codecov]

Codecov Report

❌ Patch coverage is 94.64286% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 95.40%. Comparing base (6cca46e) to head (435b72c).

Files with missing lines	Patch %	Lines
...ental/packages/opentelemetry-sdk-node/src/utils.ts	92.06%	5 Missing ⚠️
...ental/packages/opentelemetry-sdk-node/src/start.ts	97.95%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6152      +/-   ##
==========================================
- Coverage   95.40%   95.40%   -0.01%     
==========================================
  Files         317      318       +1     
  Lines        9440     9546     +106     
  Branches     2188     2218      +30     
==========================================
+ Hits         9006     9107     +101     
- Misses        434      439       +5     

Files with missing lines	Coverage Δ
...tal/packages/opentelemetry-sdk-node/src/semconv.ts	100.00% <ø> (ø)
...ental/packages/opentelemetry-sdk-node/src/start.ts	98.52% <97.95%> (+2.52%)	⬆️
...ental/packages/opentelemetry-sdk-node/src/utils.ts	93.24% <92.06%> (-0.63%)	⬇️

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[JamieDanielson]

Took a pass through this and added some notes.

[JamieDanielson]

Suggested change

	): LoggerProvider | undefined {
	): LoggerProvider {

Is there a scenario where setupLoggerProvider would be undefined? setupResource only returns a Resource not undefined

[maryliag]

if you don't have any log provider on env variables or config file, there is no logger provider to be setup, so it will return undefined

setupResource have a default value for resources, this is why it doesn't have the option to return undefined

[JamieDanielson]

🤔 If someone uses a config file but neglects to specify a valid exporter (otlp_http, otlp_grpc, otlp_file/development(soon), console)... should we default an exporter for them or should we consider it a noop because it's invalid? It's not clear to me.

[maryliag]

I believe I saw the default should be otlp_http in this case, so I kept at that.

[maryliag]

Note: tests will get fixed when this gets merged #6166

I copied the majority of tests form the original sdk tests, to make sure the behaviour didn't change with the new function