Creating a job inside an existing view

Hello,

Creating a job inside an existing view is not supported.

I suggest something like :
```
createJob(String viewName, String jobName, String jobXml)
```

Start by locating the existing job-creation and view-related entry points in the Java client and checking how their tests exercise Jenkins requests. Confirm the Jenkins API operation needed to create a job within an existing view, then implement the requested createJob(String viewName, String jobName, String jobXml) behavior and add coverage. Done when the operation works for an existing view and the test suite passes.

索引モデルが issue の本文から書いたものです。