feat(node-sdk): add serviceName config option

[naseemkullah]

Which problem is this PR solving?

Fixes #2799

configure service name directly in the node SDK config

Short description of the changes

add optional serviceName option in node SDK constructor, which behind the scenes creates another resource that is merged with any one that may have been passed in. this occurs after autoDetectResources so that the in code config set service name trumps any env set service name

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

How Has This Been Tested?

• unit tests

Checklist:

• Followed the style guidelines of this project
• Unit tests have been added
• Documentation has been updated

[codecov]

Codecov Report

Merging #2867 (495f5cf) into main (3cc40d7) will decrease coverage by 0.54%.
The diff coverage is n/a.

❗ Current head 495f5cf differs from pull request most recent head c80bde4. Consider uploading reports for the commit c80bde4 to get more accurate results

@@            Coverage Diff             @@
##             main    #2867      +/-   ##
==========================================
- Coverage   92.64%   92.09%   -0.55%     
==========================================
  Files         187       82     -105     
  Lines        6169     2405    -3764     
  Branches     1303      520     -783     
==========================================
- Hits         5715     2215    -3500     
+ Misses        454      190     -264     

Impacted Files	Coverage Δ
...s/opentelemetry-core/src/platform/node/sdk-info.ts	0.00% <0.00%> (-100.00%)	⬇️
...opentelemetry-core/src/platform/node/globalThis.ts	0.00% <0.00%> (-100.00%)	⬇️
...pentelemetry-core/src/platform/node/performance.ts	0.00% <0.00%> (-100.00%)	⬇️
...emetry-api-metrics/src/platform/node/globalThis.ts	0.00% <0.00%> (-100.00%)	⬇️
...lemetry-resources/src/detectors/ProcessDetector.ts	31.81% <0.00%> (-68.19%)	⬇️
...perimental/packages/otlp-exporter-base/src/util.ts	79.41% <0.00%> (-17.65%)	⬇️
...ckages/opentelemetry-exporter-zipkin/src/zipkin.ts	84.48% <0.00%> (-15.52%)	⬇️
...lemetry-resources/src/detectors/BrowserDetector.ts	93.33% <0.00%> (-6.67%)	⬇️
...imental/packages/opentelemetry-sdk-node/src/sdk.ts
...dk-metrics-base/src/state/MetricStorageRegistry.ts
... and 103 more

[naseemkullah]

OK, now back to original proposal of just adding a serviceName config option 👍

[legendecas]

LGTM