[flutter_tools] Running flutter config should only show configured settings #81831
Description
Use case
Currently running flutter config also prints the usage information, which constitutes all the flags the user could pass to turn a specific feature on, thus resulting in extra noise for someone who would only want to view the currently configured settings:
$ flutter config
Configure Flutter settings.
To remove a setting, configure it to an empty string.
The Flutter tool anonymously reports feature usage statistics and basic crash reports to help improve
Flutter tools over time. See Google's privacy policy: https://www.google.com/intl/en/policies/privacy/
Global options:
-h, --help Print this usage information.
-v, --verbose Noisy logging, including all shell commands executed.
...
The (new) user would have to scan this message all the way down to view the settings, or worse, might completely miss them.
Proposal
Since the usage information can be also viewed by passing -h/--help just like other flutter sub-commands, flutter config could be configured to only show the current user settings, with a suggestion to run flutter config -h to view all settings.
$ flutter config
Configured Flutter settings.
Run "flutter config -h" to see all available settings.
enable-linux-desktop: true
enable-web: true
enable-ios: false
Analytics reporting is currently disabled.