feat(l10n): 엔딩 스크롤 속도업 안내 문자열 추가

- endingHoldToSpeedUp: 길게 누르면 빨리 스크롤
- 한/영/일/중 4개 언어 지원

lib/l10n/app_en.arb

@@ -307,5 +307,8 @@
   "@endingSkip": { "description": "Skip button" },
 
   "endingTapToSkip": "TAP TO SKIP",
-  "@endingTapToSkip": { "description": "Tap to skip hint" }
+  "@endingTapToSkip": { "description": "Tap to skip hint" },
+
+  "endingHoldToSpeedUp": "HOLD TO SPEED UP",
+  "@endingHoldToSpeedUp": { "description": "Hold to speed up scrolling hint" }
 }

lib/l10n/app_ja.arb

@@ -92,5 +92,6 @@
   "endingHallOfFameLine2": "殿堂に記録されます",
   "endingHallOfFameButton": "殿堂入り",
   "endingSkip": "スキップ",
-  "endingTapToSkip": "タップでスキップ"
+  "endingTapToSkip": "タップでスキップ",
+  "endingHoldToSpeedUp": "長押しで高速スクロール"
 }

lib/l10n/app_ko.arb

@@ -92,5 +92,6 @@
   "endingHallOfFameLine2": "명예의 전당에 기록됩니다",
   "endingHallOfFameButton": "명예의 전당",
   "endingSkip": "건너뛰기",
-  "endingTapToSkip": "탭하여 건너뛰기"
+  "endingTapToSkip": "탭하여 건너뛰기",
+  "endingHoldToSpeedUp": "길게 누르면 빨리 스크롤"
 }

lib/l10n/app_localizations.dart

@@ -646,6 +646,12 @@ abstract class L10n {
   /// In en, this message translates to:
   /// **'TAP TO SKIP'**
   String get endingTapToSkip;
+
+  /// Hold to speed up scrolling hint
+  ///
+  /// In en, this message translates to:
+  /// **'HOLD TO SPEED UP'**
+  String get endingHoldToSpeedUp;
 }
 
 class _L10nDelegate extends LocalizationsDelegate<L10n> {

lib/l10n/app_localizations_en.dart

@@ -294,4 +294,7 @@ class L10nEn extends L10n {
 
   @override
   String get endingTapToSkip => 'TAP TO SKIP';
+
+  @override
+  String get endingHoldToSpeedUp => 'HOLD TO SPEED UP';
 }

lib/l10n/app_localizations_ja.dart

@@ -294,4 +294,7 @@ class L10nJa extends L10n {
 
   @override
   String get endingTapToSkip => 'タップでスキップ';
+
+  @override
+  String get endingHoldToSpeedUp => '長押しで高速スクロール';
 }

lib/l10n/app_localizations_ko.dart

@@ -294,4 +294,7 @@ class L10nKo extends L10n {
 
   @override
   String get endingTapToSkip => '탭하여 건너뛰기';
+
+  @override
+  String get endingHoldToSpeedUp => '길게 누르면 빨리 스크롤';
 }

lib/l10n/app_localizations_zh.dart

@@ -294,4 +294,7 @@ class L10nZh extends L10n {
 
   @override
   String get endingTapToSkip => '点击跳过';
+
+  @override
+  String get endingHoldToSpeedUp => '长按加速滚动';
 }

lib/l10n/app_zh.arb

@@ -92,5 +92,6 @@
   "endingHallOfFameLine2": "将被铭记于荣誉殿堂",
   "endingHallOfFameButton": "荣誉殿堂",
   "endingSkip": "跳过",
-  "endingTapToSkip": "点击跳过"
+  "endingTapToSkip": "点击跳过",
+  "endingHoldToSpeedUp": "长按加速滚动"
 }