Add pipeline and runner fields to job event webhook

What does this MR do?

• Add pipeline and runner fields to job event webhook
• Change Gitlab::DataBuilder::Pipeline::hook_attrs, Gitlab::DataBuilder::Pipeline::runner_hook_attrs to class method to reuse the data structure for pipeline and runner

Resolve #62617 (moved).

Note: The source attribute in pipeline depends on !32373 (merged).

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry for user-facing changes, or community contribution. Check the link for other scenarios.
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Performance and Testing

I'm new to GitLab source code and have no idea where and how to write tests. Please help.