feat: pkg/util/gitlab Enhancement (sub task of pkg/util Enhancement #833)

[jxs1211]

Pre-Checklist

Note: please complete ALL items in the following checklist.

• I have read through the CONTRIBUTING.md documentation.
• My code has the necessary comments and documentation (if needed).
• I have added relevant tests

Description

add ut for the package

Related Issues

see #833 for the details

New Behavior (screenshots if needed)

[going@dev gitlab]$ go tool cover -func=coverage.out
github.com/devstream-io/devstream/pkg/util/gitlab/ci_yml_templates.go:6:        GetGitLabCIGolangTemplate       75.0%
github.com/devstream-io/devstream/pkg/util/gitlab/commits.go:14:                CommitSingleFile                83.3%
github.com/devstream-io/devstream/pkg/util/gitlab/commits.go:35:                DeleteSingleFile                83.3%
github.com/devstream-io/devstream/pkg/util/gitlab/commits.go:55:                UpdateSingleFile                83.3%
github.com/devstream-io/devstream/pkg/util/gitlab/commits.go:76:                CommitMultipleFiles             90.0%
github.com/devstream-io/devstream/pkg/util/gitlab/gitlab.go:16:                 WithBaseURL                     100.0%
github.com/devstream-io/devstream/pkg/util/gitlab/gitlab.go:27:                 NewClient                       92.3%
github.com/devstream-io/devstream/pkg/util/gitlab/project.go:20:                CreateProject                   87.0%
github.com/devstream-io/devstream/pkg/util/gitlab/project.go:69:                DeleteProject                   75.0%
github.com/devstream-io/devstream/pkg/util/gitlab/project.go:78:                DescribeProject                 80.0%
github.com/devstream-io/devstream/pkg/util/gitlab/repository_files.go:12:       FileExists                      72.7%
total:                                                                          (statements)                    84.4%

[iyear]

Elegant unit tests! 🚀 I learned a lot about unit testing practices.

[iyear]

Well Done! 🚀