Move sync test

Author: simolus3

packages/powersync_core/test/in_memory_sync_test.dart renamed to packages/powersync_core/test/sync/in_memory_sync_test.dart

@@ -10,11 +10,11 @@ import 'package:shelf/shelf.dart';
 import 'package:shelf_router/shelf_router.dart';
 import 'package:test/test.dart';
 
-import 'bucket_storage_test.dart';
-import 'server/sync_server/in_memory_sync_server.dart';
-import 'utils/abstract_test_utils.dart';
-import 'utils/in_memory_http.dart';
-import 'utils/test_utils_impl.dart';
+import '../bucket_storage_test.dart';
+import '../server/sync_server/in_memory_sync_server.dart';
+import '../utils/abstract_test_utils.dart';
+import '../utils/in_memory_http.dart';
+import '../utils/test_utils_impl.dart';
 
 void main() {
   _declareTests(

packages/powersync_core/test/streaming_sync_test.dart renamed to packages/powersync_core/test/sync/streaming_sync_test.dart

@@ -9,10 +9,10 @@ import 'package:logging/logging.dart';
 import 'package:powersync_core/powersync_core.dart';
 import 'package:test/test.dart';
 
-import 'server/sync_server/in_memory_sync_server.dart';
-import 'test_server.dart';
-import 'utils/abstract_test_utils.dart';
-import 'utils/test_utils_impl.dart';
+import '../server/sync_server/in_memory_sync_server.dart';
+import '../test_server.dart';
+import '../utils/abstract_test_utils.dart';
+import '../utils/test_utils_impl.dart';
 
 final testUtils = TestUtils();