Add support jenkins native of job execution status for updateGitlabCommitStatus function

## Issue
Hi,
Can we natively support jenkins execution job status for pushing them to updateGitlabCommitStatus directly for avoiding extra conditional switches?

Example of current conditional swithes demonstrated below:
```
if (currentResult == "aborted") {
job_status = "canceled"
} else if (currentResult == "success") {
job_status = "success"
} else {
job_status = "failed"
}

updateGitlabCommitStatus name: 'build', state: job_status
```
### Context
- **Gitlab version**: 13.6.1-ee
- **Jenkins version**: 2.204.6
- **Job type**: Pipeline