Change maven cli defaults based on `CI` env variable

### New feature, improvement proposal

CI servers usually define a `CI` env variable:

For reference:

- Github [Default environment variables](https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/store-information-in-variables#default-environment-variables)
- Jenkins [Global Variable Reference](https://ci.eclipse.org/releng/pipeline-syntax/globals#env)
- GitLab [Predefined CI/CD variables reference](https://docs.gitlab.com/ee/ci/variables/predefined_variables.html)

it would be great if maven could detect that and change some of the default settings then, for example:

1. show transfer progress is currently _ON_ by default it should be _OFF_ by default on CI servers
2. batch mode is _OFF_ by default and should be _ON_ by default on CI servers
3. ... maybe more ...

reason is that these options are usually tweaked for the CI and it always adds some boilerplate to these scripts. It would be great if maven can use convention-over-configuration here and switch the defaults depending on where it runs. If anyone absolutely want other values they can still explicitly configure them.