Added missing attributes for webhook events

[yarisvt]

Updated the following events with missing properties

• AbstractPushEvent
• BuildCommit
• EventCommit
• EventIssue
• JobEvent
• PipelineEvent
• WikiPageEvent

Especially, PipelineEvent and JobEvent have changed.

PipelineEvent no longer uses a jobs array (Job), but a builds array (Build). I have not removed the jobs array for backwards compatibility.

JobEvent no longer uses job prefixed properties, but build prefixed properties. I have not removed the job prefixed properties for backwards compatibility. I did change the object_kind to build as it should be according to the docs (used to be job in version 12.x, but changed to build in version 13.x). This might break backwards compatibility.

[jmini]

I am wondering if this is not a duplication of the enum Constants.JobScope that we already have.

But BuildStatus seems a better name and feels more natural.

[yarisvt]

I actually copied JobStatus into BuildStatus, they're the same except for the name. But I figured it's more clear to distinguish between jobs and builds

[jmini]

This looks a very good addition to the project. 👍

[jmini]

Just there are build failure after your change.

I think this is due to the fact that there was already a BuildEvent with OBJECT_KIND build

gitlab4j-api/gitlab4j-api/src/main/java/org/gitlab4j/api/WebHookManager.java

Lines 179 to 190 in 7e8795e

	case BuildEvent.OBJECT_KIND:
	case IssueEvent.OBJECT_KIND:
	case JobEvent.OBJECT_KIND:
	case MergeRequestEvent.OBJECT_KIND:
	case NoteEvent.OBJECT_KIND:
	case PipelineEvent.OBJECT_KIND:
	case PushEvent.OBJECT_KIND:
	case TagPushEvent.OBJECT_KIND:
	case WikiPageEvent.OBJECT_KIND:
	case ReleaseEvent.OBJECT_KIND:
	case DeploymentEvent.OBJECT_KIND:
	case WorkItemEvent.OBJECT_KIND:

I didn't look into all the details, but different/more cleanup might be necessary.

[yarisvt]

You're right, there already is a BuildEvent, I missed that somehow. I've reverted the changes in JobEvent, and updated BuildEvent with some missing properties.