feat: add optional filter for OTel resource attributes

[valerio]

Fixes #347

This PR adds support for exporting OpenTelemetry resource attributes that match a regular expression, as was suggested in the linked issue.

[jonbcampos-alto]

very excited to see this go through!

[codecov]

Codecov Report

Merging #361 (887eb6a) into main (28ee4ad) will increase coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #361      +/-   ##
==========================================
+ Coverage   95.48%   95.56%   +0.07%     
==========================================
  Files          12       12              
  Lines         421      428       +7     
  Branches       80       81       +1     
==========================================
+ Hits          402      409       +7     
  Misses         19       19              

Impacted Files	Coverage Δ
...es/opentelemetry-cloud-trace-exporter/src/trace.ts	95.16% <100.00%> (+0.16%)	⬆️
...pentelemetry-cloud-trace-exporter/src/transform.ts	98.14% <100.00%> (+0.08%)	⬆️

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[aabmass]

/gcbrun

[aabmass]

Thank you for the PR and apologies for not looking sooner. LGTM, just a few nits

[valerio]

Thanks for the review @aabmass!
I've applied your suggestions, let me know if anything else needs to be done for merging/releasing.

[aabmass]

I fixed the lint so it should be good to go once the tests pass. Thanks for your contribution!

[jonbcampos-alto]

👍 great job everyone! very excited to work this into my projects

[jonbcampos-alto]

@aabmass question. when does the team usually cut a change to the package? I can clone the repo and get the changes, but curious when there is an official cut.

[aabmass]

We don't have a regular cadence, but I'll try to cut a release sooner than later. Depends on how long some of the other updates take.

[aabmass]

This is released in 1.1.0

[jonbcampos-alto]

@aabmass thank you! the minute you closed the PR I started working it into our microservices and I'm showing it to the engineering team in about an hour. This makes our work with tracing so much easier to use.