Feature Request

Is your feature request related to a problem? Please describe

Currently, eventmesh only support http/tcp protocol, it will support more protocols like gRPC/MQTT/AMQP/CloudEvents etc, it would be nice if protocol can be pluggable.

Describe the solution you'd like

Using eventmesh-spi and add new moudle like eventmesh-protocol-plugin

Describe alternatives you've considered

Additional context