[OCB] Make AWS XRay/EMF Exporters available as individual modules directly from amazon-contributing

[jj22ee]

Description:

Main Changes:
For the following components, make them available as go modules specifically from the amazon-contributing repository fork of opentelemetry-collector-contrib:

exporter/awsxrayexporter/
exporter/awsemfexporter/

// Internal dependencies of above modules
internal/aws/xray/
internal/aws/metrics/
internal/aws/cwlogs/
internal/aws/awsutil/

The involves changing:

• from: module github.com/open-telemetry/opentelemetry-collector-contrib/...
• to: module github.com/amazon-contributing/opentelemetry-collector-contrib/...

Additional Changes:

1. Change version of github.com/amazon-contributing/opentelemetry-collector-contrib/override/awsfromv0.0.0-00010101000000-000000000000tov0.0.0-20241024160840-0c7076070f12in allgo.mod` files
2. Remove dependency on internal/coreinternal. This involves copying:
   • const value opencensusAttributeExporterVersion = "opencensus.exporterversion"
   • function spanIDToHexOrEmptyString(id pcommon.SpanID)

Link to tracking Issue:

Testing:

1. Run go test ./... in all 6 modified modules.
2. Build OTel Collector via OCB with these components from jj22ee repository
3. To test downloading the modules from amazon-contributing/opentelemetry-collector-contrib, this can only happen after the PR is merged, so it will be tested then.

Documentation: