Proposal: Migrate elasticsearch instrumentation to opentelemetry-js-contrib

[carlosalberto]

Same case as #169 - since Lightstep is interested in having Elasticsearch instrumentation in OTel, we were originally thinking of 'porting' (i.e. duplicating) the code from this repo (given it has Apache License) to opentelemetry-js-contrib, but happy to help in any way - once a decision is made in #169, that is.

[habmic]

After discussing update aws-sdk instrumentation in the last SIG meeting (https://github.com/aspecto-io/opentelemetry-ext-js/issues/169#issuecomment-897496262) we will upstream aws-sdk first and then elasticsearch instrumentation.

[blumamir]

First PR - upstream testing utils package used by aws-sdk instrumentation: open-telemetry/opentelemetry-js-contrib#621

[daniegarcia254]

Is this still happening any time soon?