Get the variables from gitlab project variables

[ecourreges-orange]

Is your feature request related to a problem? Please describe.
I would like an option for this tool to automatically get and use variables from the gitlab server project and/or group level variables.
I am first interested by project level variables: https://docs.gitlab.com/ee/api/project_level_variables.html

Describe the solution you'd like
I would like a CLI option like --project-id my_id and/or a project-id setting in one of the dot files, so that I can commit this file safely, and automatically get the variables filled from a call to gitlab API, whose URL can be guessed from the git remote and the project ID.

Describe alternatives you've considered
I have to manually create a file in my repo at first use or use --variable every time which is cumbersome

[firecow]

I'm most likely not going to work on this. We only use project CI/CD variables for holding secrets, that we do not want our developers to get their hands on.

I see the purpose of this feature though.

[firecow]

@ecourreges-orange Keep it open, thats ok. Maybe some other contributor will implement it.

[renne]

It would be useful to support multiple environments.
We, for example, use 3 environments in a Gitlab-CI/CD project:

1. production environment
2. staging environment
3. development environment

This allows us to use variable references for variables which are the same for all 3 environments.
The number of CI/CD-variables is reduced drastically by that approach.
Pulling the variables of the development environment to laptops of developers would simplify things a lot and keep the variables in sync between Gitlab and local development.