[Dev][CI] Make nightly group as an alias of nightly-*

We use `nightly-*` groups not `nightly` group for our nightly CI.
So we need to use `crossbow submit -g nightly-tests -g nightly-packaging -g nightly-release` to run nightly jobs when we want to run nightly jobs before we merge a pull request.
But it's inconvenient and easy to mistake. For example, some developers use `crossbow submit -g nightly` to run nightly jobs.

How about make `nightly` group as an alias of `nightly-*` groups to improve developer experience?

**Reporter**: [Kouhei Sutou](https://issues.apache.org/jira/browse/ARROW-18094) / @kou
**Assignee**: [Kouhei Sutou](https://issues.apache.org/jira/browse/ARROW-18094) / @kou
#### PRs and other links:
- [GitHub Pull Request #14456](https://github.com/apache/arrow/pull/14456)

_{**Note**: *This issue was originally created as [ARROW-18094](https://issues.apache.org/jira/browse/ARROW-18094). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}