fix(projects): correct the lang file name & add recommend vscode plugin i18n-ally

.vscode/extensions.json

@@ -8,6 +8,7 @@
     "formulahendry.auto-close-tag",
     "formulahendry.auto-rename-tag",
     "kisstkondoros.vscode-gutter-preview",
+    "lokalise.i18n-ally",
     "mariusalchimavicius.json-to-ts",
     "mhutchie.git-graph",
     "sdras.vue-vscode-snippets",

src/locales/locale.ts

@@ -1,4 +1,4 @@
-import zhCN from './lang/zhCN';
+import zhCN from './lang/zh-CN';
 import en from './lang/en';
 import kmKH from './lang/km-KH';