Added pretty print for encoded JSON

lib/state/project.dart

@@ -40,7 +40,7 @@ class ProjectState extends ChangeNotifier {
     final indexFile = await _getIndexFile();
     if (!await indexFile.exists()) {
       _index = const ProjectIndex(components: []);
-      await indexFile.writeAsString(jsonEncode(_index.toJson()));
+      await indexFile.writeAsString(const JsonEncoder.withIndent("  ").convert(_index.toJson()));
     }
     else {
       _index = ProjectIndex.fromJson(jsonDecode(await indexFile.readAsString()));
@@ -51,7 +51,7 @@ class ProjectState extends ChangeNotifier {
     _dirty = true;
     _index = newIndex;
     final indexFile = await _getIndexFile();
-    await indexFile.writeAsString(jsonEncode(index.toJson()));
+    await indexFile.writeAsString(const JsonEncoder.withIndent("  ").convert(index.toJson()));
     notifyListeners();
   }
 

lib/state/projects.dart

@@ -33,7 +33,7 @@ class ProjectsState extends ChangeNotifier {
     // Sort projects when updating: latest update first
     index = newIndex.copyWith(projects: newIndex.projects.toList()..sort((p1, p2) => p2.lastUpdate.compareTo(p1.lastUpdate)));
     final indexFile = await _getIndexFile();
-    await indexFile.writeAsString(jsonEncode(index.toJson()));
+    await indexFile.writeAsString(const JsonEncoder.withIndent("  ").convert(index.toJson()));
     notifyListeners();
   }