chore: Move the drift_offline_first to legacy in favor of Serverpod implementation (#32)

legacy/drift_offline_sync/test/utils/migration.dart

@@ -0,0 +1,82 @@
+import 'package:drift/drift.dart';
+import 'package:drift_offline_sync/drift_offline_sync.dart';
+
+import 'tables.dart';
+import 'user.dart';
+
+part 'migration.g.dart';
+
+@DriftDatabase(tables: [TodosTable])
+class FirstDb extends _$FirstDb {
+  FirstDb(super.e) {
+    driftRuntimeOptions.dontWarnAboutMultipleDatabases = true;
+  }
+
+  bool created = false;
+  bool didUpgrade = false;
+  bool onBeforeOpen = false;
+
+  @override
+  int schemaVersion = 1;
+
+  @override
+  OfflineSyncMigrator createMigrator() => OfflineSyncMigrator(
+    this,
+    userId: testUserId,
+    nodeId: testNodeId,
+  );
+
+  @override
+  MigrationStrategy get migration => MigrationStrategy(
+    onCreate: (m) async {
+      created = true;
+      await m.createAll();
+    },
+    onUpgrade: (m, from, to) async {
+      if (from == 1 && to == 2) {
+        didUpgrade = true;
+      }
+    },
+    beforeOpen: (m) async {
+      onBeforeOpen = true;
+    },
+  );
+}
+
+@DriftDatabase(tables: [Users])
+class SecondDb extends _$SecondDb {
+  SecondDb(super.e) {
+    driftRuntimeOptions.dontWarnAboutMultipleDatabases = true;
+  }
+
+  bool created = false;
+  bool didUpgrade = false;
+  bool onBeforeOpen = false;
+
+  @override
+  int schemaVersion = 2;
+
+  @override
+  OfflineSyncMigrator createMigrator() => OfflineSyncMigrator(
+    this,
+    userId: testUserId,
+    nodeId: testNodeId,
+  );
+
+  @override
+  MigrationStrategy get migration => MigrationStrategy(
+    onCreate: (m) async {
+      created = true;
+      await m.createAll();
+    },
+    onUpgrade: (m, from, to) async {
+      if (from == 1 && to == 2) {
+        await m.createTable(users);
+        didUpgrade = true;
+      }
+    },
+    beforeOpen: (m) async {
+      onBeforeOpen = true;
+    },
+  );
+}