Add support for elasticjob framework

[steverao]

Is your feature request related to a problem? Please describe.

elasticjob is a distributed task scheduling framework, the project has 8k stars and 3.3k forks in GitHub. It is widely used. Will we consider supporting it?

Describe the solution you'd like

Add support for elasticjob framework

Describe alternatives you've considered

No response

Additional context

No response

[steverao]

@open-telemetry/java-instrumentation-approvers WDYT? If think it's necessary to support, I can to finish it later.

[123liuziming]

We need this plugin!

[trask]

makes sense to me, I think we'd accept this contribution