Sort `import` directives in all *.dart code

PiperOrigin-RevId: 604314093
diff --git a/analysis_options.yaml b/analysis_options.yaml
index 0cfb93b..6a7f486 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml
@@ -6,6 +6,8 @@
 
 linter:
   rules:
+    - combinators_ordering
     - comment_references
+    - directives_ordering
     - test_types_in_equals
-    - throw_in_finally
\ No newline at end of file
+    - throw_in_finally
diff --git a/lib/mockito.dart b/lib/mockito.dart
index 6febba3..312fee4 100644
--- a/lib/mockito.dart
+++ b/lib/mockito.dart
@@ -15,6 +15,8 @@
 // ignore: deprecated_member_use
 export 'package:test_api/fake.dart' show Fake;
 
+export 'src/dummies.dart'
+    show provideDummy, provideDummyBuilder, MissingDummyValueError;
 export 'src/mock.dart'
     show
         Mock,
@@ -53,5 +55,3 @@
         MissingStubError,
         FakeUsedError,
         FakeFunctionUsedError;
-export 'src/dummies.dart'
-    show provideDummy, provideDummyBuilder, MissingDummyValueError;