Add Chinese translation

lib/l10n/app_zh.arb

@@ -0,0 +1,24 @@
+{
+  "trackingTitle": "跟踪",
+  "settingsTitle": "设置",
+  "statusTitle": "日志",
+  "saveButton": "保存",
+  "cancelButton": "取消",
+  "locationButton": "发送位置",
+  "statusButton": "显示状态",
+  "settingsButton": "更改设置",
+  "invalidValue": "无效的值",
+  "idLabel": "设备标识符",
+  "urlLabel": "服务器地址",
+  "accuracyLabel": "定位精度",
+  "highAccuracyLabel": "高",
+  "mediumAccuracyLabel": "中",
+  "lowAccuracyLabel": "低",
+  "intervalLabel": "间隔（秒）",
+  "distanceLabel": "距离（米）",
+  "bufferLabel": "离线缓冲",
+  "trackingLabel": "持续跟踪",
+  "startAction": "启动服务",
+  "stopAction": "停止服务",
+  "sosAction": "发送SOS"
+}