opentelemetry-sdk: add ServiceInstanceIdResourceDetector for populating service.instance.id (#5259)

* add ServiceInstanceIdResourceDetector for populating service.instance.id

* add changelog fragment

* update service instance id resource detector implementation

* enable service instance id resource detector by default

* add 'service.instance.id' to Weaver test registry

* simplify fork tests

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Co-authored-by: Emídio Neto <9735060+emdneto@users.noreply.github.com>