feat: gitlab enhancement

[imxw]

Pre-Checklist

Description

• Support Self-hosted gitlab by setting baseURL field
• Support for creating a project under groups
• Support specifying the visibility of the created project by setting visibility field

Related Issues

Closes #520

New Behavior (screenshots if needed)

[IronCore864]

Tested locally for GitLab cloud:

tiexin@mbp ~/work/test/devstream $ ./dtm apply
2022-05-30 15:00:07 ℹ [INFO]  Apply started.
2022-05-30 15:00:07 ℹ [INFO]  Using dir <.devstream> to store plugins.
2022-05-30 15:00:07 ℹ [INFO]  Using local backend. State file: devstream.state.
2022-05-30 15:00:07 ℹ [INFO]  Tool (gitlab-repo-scaffolding-golang/default) found in config but doesn't exist in the state, will be created.
Continue? [y/n]
Enter a value (Default is n): y

2022-05-30 15:00:11 ℹ [INFO]  Start executing the plan.
2022-05-30 15:00:11 ℹ [INFO]  Changes count: 1.
2022-05-30 15:00:11 ℹ [INFO]  -------------------- [  Processing progress: 1/1.  ] --------------------
2022-05-30 15:00:11 ℹ [INFO]  Processing: (gitlab-repo-scaffolding-golang/default) -> Create ...
2022-05-30 15:00:15 ℹ [INFO]  The repo dtm-test-go has been created.
2022-05-30 15:00:17 ✔ [SUCCESS]  Tool (gitlab-repo-scaffolding-golang/default) Create done.
2022-05-30 15:00:17 ℹ [INFO]  -------------------- [  Processing done.  ] --------------------
2022-05-30 15:00:17 ✔ [SUCCESS]  All plugins applied successfully.
2022-05-30 15:00:17 ✔ [SUCCESS]  Apply finished.
tiexin@mbp ~/work/test/devstream $ ./dtm delete -y
2022-05-30 15:02:06 ℹ [INFO]  Delete started.
2022-05-30 15:02:06 ℹ [INFO]  Using dir <.devstream> to store plugins.
2022-05-30 15:02:07 ℹ [INFO]  Using local backend. State file: devstream.state.
2022-05-30 15:02:07 ℹ [INFO]  Tool (gitlab-repo-scaffolding-golang/default) will be deleted.
2022-05-30 15:02:07 ℹ [INFO]  Start executing the plan.
2022-05-30 15:02:07 ℹ [INFO]  Changes count: 1.
2022-05-30 15:02:07 ℹ [INFO]  -------------------- [  Processing progress: 1/1.  ] --------------------
2022-05-30 15:02:07 ℹ [INFO]  Processing: (gitlab-repo-scaffolding-golang/default) -> Delete ...
2022-05-30 15:02:08 ℹ [INFO]  Prepare to delete 'gitlab-repo-scaffolding-golang_default' from States.
2022-05-30 15:02:08 ✔ [SUCCESS]  Tool (gitlab-repo-scaffolding-golang/default) delete done.
2022-05-30 15:02:08 ℹ [INFO]  -------------------- [  Processing done.  ] --------------------
2022-05-30 15:02:08 ✔ [SUCCESS]  All plugins deleted successfully.
2022-05-30 15:02:08 ✔ [SUCCESS]  Delete finished.

[IronCore864]

I have made some commits to fix grammar issues in docs/comments/logs directly. Thanks for this great improvement @imxw.