[Enhancement] Code reuse is extracted as a method.[EventMeshTestUtils]

[Alonexc]

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Enhancement Request

located at:
eventmesh-examples/src/main/java/org/apache/eventmesh/tcp/common/EventMeshTestUtils.java line 54-66,72-84,89-92,96-99,103-106,110-113,117-120,124-131,136-143,147-154,158-165

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• Yes I am willing to submit a PR!