[Feature-7946] add java sdk

[zwZjut]

Purpose of the pull request

#7946

Brief change log

Verify this pull request

This pull request is code cleanup without any test coverage.

(or)

This pull request is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

[zwZjut]

The PR logic of Java SDK：It is divided into three layers.
（1）encapsulate a client for okhttp;
（2）encapsulate the call parameters;
（3）encapsulate a dolphin client as dsclient, and each dolphin's OpenAPI corresponds to a request and response;
All newly added interfaces should be implemented in the way that they have been implemented, combined with the open API document of dolphin, and just follow the example. At present, more than 50 of the main interfaces have been implemented, and others can be added as needed. Use token of dolphin to make HTTP call.

use dsclient to create project example:

DSClient dsClient = DSClientHelper.getClient("xxx","xxxx"); // (1) token; (2) endpoint
CreateProjectRequest request = new CreateProjectRequest();
request.body.projectName = "xxxx";
request.body.description = "xxxx";
CreateProjectResponse response = dsClient.createProject(request);

add a http call example:
(1)add XXXRequest.java
(2)add XXXResponse.java
(3)add two method in DSClinet.java
public XXXResponse XXX(XXXRequest request) throws Exception {
return this.XXXWithOptions(request, new RuntimeOptions());
}
public XXXResponse XXXWithOptions(XXXRequest request, RuntimeOptions runtime) throws Exception {
Params params = new Params().setAction("XXX")
.setPathname("/dolphinscheduler/XXX")
return TeaModel.toModel(this.doRequest(request, params, runtime), XXXResponse.class);
}
RuntimeOptions used to set http run time params, default is good enough

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (2.0.6-prepare@e2b962e). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head 54db739 differs from pull request most recent head ee0b876. Consider uploading reports for the commit ee0b876 to get more accurate results

@@               Coverage Diff                @@
##             2.0.6-prepare    #8946   +/-   ##
================================================
  Coverage                 ?   21.04%           
  Complexity               ?     1591           
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  Files                    ?      536           
  Lines                    ?    22525           
  Branches                 ?     2673           
================================================
  Hits                     ?     4740           
  Misses                   ?    17300           
  Partials                 ?      485           

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[sonarqubecloud]

SonarCloud Quality Gate failed.   

51 Bugs
0 Vulnerabilities
10 Security Hotspots
1347 Code Smells

15.1% Coverage
5.4% Duplication

[zhuangchong]

Please commit to the dev branch.

[zwZjut]

Please commit to the dev branch.

The dev branch has changed too much. At present, I am not optimistic about the overall packaging and construction method of dev branch, which is not conducive to users' simple use. The interface implemented has been tested of branch 2.0.x and there is no plan to join dev at present

[sonarqubecloud]

SonarCloud Quality Gate failed.   

54 Bugs
6 Vulnerabilities
11 Security Hotspots
1767 Code Smells

16.7% Coverage
5.2% Duplication