[tool] Add command aliases (#4207)

Adds aliases for all commands that put the verb first, since currently they are inconsistent which can make it hard to remember (in particular, I often write `check-foo` instead of `foo-check` when running locally, and it fails).

Also does the long-overdue renaming of `test` to `dart-test`, since we now have `native-test`, `custom-test`, etc. `test` continues to work as an alias for individual muscle memory.

script/tool/lib/src/gradle_check_command.dart

@@ -23,6 +23,9 @@ class GradleCheckCommand extends PackageLoopingCommand {
   @override
   final String name = 'gradle-check';
 
+  @override
+  List<String> get aliases => <String>['check-gradle'];
+
   @override
   final String description =
       'Checks that gradle files follow repository conventions.';