Add projectsStopPipelineInstance

[sgokaram-saagie]

Acceptance Criteria

https://github.com/saagie/gradle-saagie-dataops-plugin/wiki/projectsStopPipelineInstance

[youenchene]

FAILURE: Build failed with an exception.

• Where: Build file '/Users/youen/Code/saagie/test plugin gradle dataops/build.gradle' line: 25

• What went wrong: A problem occurred evaluating root project 'test plugin gradle dataops'.

  Could not find method pipelineinstance() for arguments [build_5hztccp7vdj6lqhh0b85mrjce$_run_closure1$_closure4@25ffb933] on object of type io.saagie.plugin.dataops.DataOpsExtension.

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

  project { id = '2438b9b6-a9ee-4816-bfa8-9ed89896dfb4' }

  pipelineinstance {
    id = "e30fc9fe-3e89-4f7b-8ae0-7a73170d93da"
  }