Implement Events SDK

[lzchen]

Is your feature request related to a problem?

https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/event-sdk.md

Describe the solution you'd like

Implementation of the events sdk as defined by the spec.

Describe alternatives you've considered

No response

Additional Context

No response

Would you like to implement a fix?

None