fix: minor glitches (#900)

* feat: show actual proxy name instead of proxy group when hovering on a group outbound

* fix: open empty edit form and save will cause `UID not found`

* chore: tauri.conf.json json schema

* chore: missing locales

src/locales/zh.json

@@ -18,6 +18,8 @@
   "direct": "直连",
   "script": "脚本",
 
+  "Create Test": "新建测试",
+  "Edit Test": "编辑测试",
   "Edit": "编辑",
   "Icon": "图标",
   "Test URL": "测试地址",