[Task] Some of the sample guidance conforms to business usage

[AlbumenJ]

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

Apache Dubbo Component

Java Samples (apache/dubbo-samples)

Descriptions

1. EmbeddedZookeeper: Change to a regular zookeeper download, install startup commands
2. Change samples to normal applications instead of directly loading XML within the Main function.

Related issues

#13847

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

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

Code of Conduct

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[yuluo-yx]

@AlbumenJ Is embedded-zookeeper being removed here in dubbo-examples?
and replace XML load to application.yaml configuration way?

https://github.com/apache/dubbo-samples/blob/c79de2129e20c07d6572c6a09519d48b6ec50781/3-extensions/protocol/dubbo-samples-webservice/dubbo-samples-webservice-provider/src/main/java/org/apache/dubbo/samples/webservice/provider/WebserviceProvider.java#L27

If so, please assign to me and I will try to complete this.

[CrazyHZM]

@yuluo-yx
Yes, you can refer to other samples that have been completed.

[yuluo-yx]

@yuluo-yx Yes, you can refer to other samples that have been completed.

Is there a pr link to an example? I didn't find a pr associated with the current issue.
Can I submit a pr as a separate commit for removing zookeeper and updating xml? There seems to be no correlation between the two

[yuluo-yx]

ptal @CrazyHZM

apache/dubbo-samples#1115

[vishakha-mali]

Hey, I want to try this issues. Can anyone guide me?