[Feature][skywalking-grafana-plugins] Enhance topology plugin

[Fine0830]

Search before asking

• [X] I had searched in the issues and found no similar feature requirement.

Description

Support service instances and endpoints topology.

Use case

No response

Related issues

No response

Are you willing to submit a pull request to implement this on your own?

• [X] Yes I am willing to submit a pull request on my own!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct