feat(i18n): add Bulgarian language

Co-authored-by: Dimitar "Topper" Maznekov <23097319+TopperBG@users.noreply.github.com>

lib/i18n/strings.g.dart

@@ -3,8 +3,8 @@
 /// Source: lib/i18n
 /// To regenerate, run: `dart run slang`
 ///
-/// Locales: 15
-/// Strings: 17655 (1177 per locale)
+/// Locales: 16
+/// Strings: 18832 (1177 per locale)
 
 // coverage:ignore-file
 // ignore_for_file: type=lint, unused_import
@@ -16,6 +16,7 @@ import 'package:slang/generated.dart';
 import 'package:slang_flutter/slang_flutter.dart';
 export 'package:slang_flutter/slang_flutter.dart';
 
+import 'strings_bg.g.dart' deferred as l_bg;
 import 'strings_da.g.dart' deferred as l_da;
 import 'strings_de.g.dart' deferred as l_de;
 import 'strings_es.g.dart' deferred as l_es;
@@ -40,6 +41,7 @@ part 'strings_en.g.dart';
 /// - if (LocaleSettings.currentLocale == AppLocale.en) // locale check
 enum AppLocale with BaseAppLocale<AppLocale, Translations> {
 	en(languageCode: 'en'),
+	bg(languageCode: 'bg'),
 	da(languageCode: 'da'),
 	de(languageCode: 'de'),
 	es(languageCode: 'es'),
@@ -78,6 +80,13 @@ enum AppLocale with BaseAppLocale<AppLocale, Translations> {
 					cardinalResolver: cardinalResolver,
 					ordinalResolver: ordinalResolver,
 				);
+			case AppLocale.bg:
+				await l_bg.loadLibrary();
+				return l_bg.TranslationsBg(
+					overrides: overrides,
+					cardinalResolver: cardinalResolver,
+					ordinalResolver: ordinalResolver,
+				);
 			case AppLocale.da:
 				await l_da.loadLibrary();
 				return l_da.TranslationsDa(
@@ -192,6 +201,12 @@ enum AppLocale with BaseAppLocale<AppLocale, Translations> {
 					cardinalResolver: cardinalResolver,
 					ordinalResolver: ordinalResolver,
 				);
+			case AppLocale.bg:
+				return l_bg.TranslationsBg(
+					overrides: overrides,
+					cardinalResolver: cardinalResolver,
+					ordinalResolver: ordinalResolver,
+				);
 			case AppLocale.da:
 				return l_da.TranslationsDa(
 					overrides: overrides,

lib/screens/settings/appearance_settings_screen.dart

@@ -283,6 +283,8 @@ class AppearanceSettingsScreen extends StatelessWidget {
         return 'Dansk';
       case AppLocale.nb:
         return 'Norsk bokmål';
+      case AppLocale.bg:
+        return 'Български';
     }
   }