Add font patching script for linux arm64. Close #468

patch/font.dart

@@ -0,0 +1,28 @@
+import 'dart:io';
+
+import 'package:archive/archive_io.dart';
+import 'package:dio/dio.dart';
+
+void main() async {
+  const harmonySansLink = "https://developer.huawei.com/images/download/general/HarmonyOS-Sans.zip";
+
+  var dio = Dio();
+  await dio.download(harmonySansLink, "HarmonyOS-Sans.zip");
+  await extractFileToDisk("HarmonyOS-Sans.zip", "./assets/");
+  File("HarmonyOS-Sans.zip").deleteSync();
+
+  var pubspec = await File("pubspec.yaml").readAsString();
+  pubspec = pubspec.replaceFirst("# fonts:",
+"""  fonts:
+  - family: HarmonyOS Sans
+    fonts:
+      - asset: assets/HarmonyOS Sans/HarmonyOS_Sans_SC/HarmonyOS_Sans_SC_Regular.ttf
+""");
+  await File("pubspec.yaml").writeAsString(pubspec);
+
+  var mainDart = await File("lib/main.dart").readAsString();
+  mainDart = mainDart.replaceFirst("Noto Sans CJK", "HarmonyOS Sans");
+  await File("lib/main.dart").writeAsString(mainDart);
+
+  print("Successfully patched font.");
+}