feat(exporter-prometheus): support withoutTargetInfo option

[cjihrig]

Which problem is this PR solving?

This commit adds support for the without_target_info option (converted to camelCase to match other options) from the spec.

Fixes # N/A

Short description of the changes

This commit adds support for the without_target_info option (converted to camelCase to match other options) from the spec.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Existing tests
• Tests added

Checklist:

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.16%. Comparing base (06621d2) to head (b75a176).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5962      +/-   ##
==========================================
- Coverage   95.17%   95.16%   -0.01%     
==========================================
  Files         316      316              
  Lines        8521     8526       +5     
  Branches     1763     1766       +3     
==========================================
+ Hits         8110     8114       +4     
- Misses        411      412       +1     

Files with missing lines	Coverage Δ
...etry-exporter-prometheus/src/PrometheusExporter.ts	96.62% <100.00%> (+0.07%)	⬆️
...ry-exporter-prometheus/src/PrometheusSerializer.ts	96.17% <100.00%> (+0.07%)	⬆️

... and 1 file with indirect coverage changes

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[pichlermarc]

looks good, thanks 🙂

[otelbot]

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