Add a top-level typed_mock package.

pkg/analysis_server/test/test_all.dart

Index: pkg/analysis_server/test/test_all.dart
diff --git a/pkg/analysis_server/test/test_all.dart b/pkg/analysis_server/test/test_all.dart
index dc410d05ebc2e891d0d34366a7ef09135ade3bb0..e230a51dd654b322f56d536e3ea17ae022970ebc 100644
--- a/pkg/analysis_server/test/test_all.dart
+++ b/pkg/analysis_server/test/test_all.dart
@@ -10,7 +10,6 @@ import 'domain_context_test.dart' as domain_context_test;
 import 'domain_server_test.dart' as domain_server_test;
 import 'protocol_test.dart' as protocol_test;
 import 'socket_server_test.dart' as socket_server_test;
-import 'typed_mock_test.dart' as typed_mock_test;
 
 /// Utility for manually running all tests
 main() {
@@ -21,6 +20,5 @@ main() {
     domain_server_test.main();
     protocol_test.main();
     socket_server_test.main();
-    typed_mock_test.main();
   });
 }