* update the grpc example to remove global usage
* update the http example to remove global usage
* update the jaeger example to get rid of the global usage
* update the metrics example to get rid of the global OpenTelemetry usage
* update the otlp exporter example to get rid of the global OpenTelemetry usage
* update the sdk-usage example to get rid of the global OpenTelemetry usage
* update the zipkin example to get rid of the global OpenTelemetry usage
* run the formatter
* update method names and details based on feedback
* added prometheus exporter example
* tidying up
* Update examples/prometheus/README.md
Co-authored-by: Giovanni Liva <giovanni.liva@dynatrace.com>
* Update examples/prometheus/README.md
Co-authored-by: Giovanni Liva <giovanni.liva@dynatrace.com>
* added port arg check as per code review suggestion
Co-authored-by: Giovanni Liva <giovanni.liva@dynatrace.com>