feat: intro page (#416)

Fixes #415

lib/l10n/app_zh_tw.arb

@@ -101,6 +101,7 @@
   "export": "導出",
   "extraArgs": "額外參數",
   "failed": "失敗",
+  "fdroidReleaseTip": "如果你是從 Fdroid 下載的本應用，推薦關閉此選項",
   "feedback": "反饋",
   "feedbackOnGithub": "如果你有任何問題，請在GitHub反饋",
   "fieldMustNotEmpty": "這些輸入框不能為空。",
@@ -135,6 +136,7 @@
   "imagesList": "鏡像列表",
   "import": "導入",
   "inAppUpdate": "在App內更新？否則使用瀏覽器下載。",
+  "init": "初始化",
   "inner": "內置",
   "inputDomainHere": "在這裡輸入域名",
   "install": "安裝",