feat: Add support for hash and private channels with corresponding UI updates

- Introduced new localization strings for channel types and their descriptions in Italian, German, Spanish, French, Croatian, Slovenian, and English.
- Updated the `AppProvider` to handle channel info reception, including deletion of channels and updating the UI accordingly.
- Enhanced `ChannelsProvider` to support channel removal and notify listeners.
- Modified `ConnectionProvider` to include methods for checking empty channel slots and deleting channels.
- Updated BLE service methods to handle channel deletion and verification.
- Improved the `AddChannelDialog` to differentiate between hash and private channels, including dynamic UI elements based on channel type.
- Added delete functionality for channels in the `ContactTile` widget with confirmation dialogs.
- Adjusted permission request dialog behavior to allow dismissing by tapping outside.

lib/l10n/app_localizations_it.dart

@@ -2076,6 +2076,14 @@ class AppLocalizationsIt extends AppLocalizations {
   String get channelSecretHelp =>
       'Questa password deve essere condivisa con tutti i membri del team che necessitano di accesso a questo canale';
 
+  @override
+  String get channelTypesInfo =>
+      'Canali hash (#squadra): Password generata automaticamente dal nome. Stesso nome = stesso canale su tutti i dispositivi.\n\nCanali privati: Usa una password esplicita. Solo chi ha la password può unirsi.';
+
+  @override
+  String get hashChannelInfo =>
+      'Canale hash: La password verrà generata automaticamente dal nome del canale. Chiunque utilizzi lo stesso nome si unirà allo stesso canale.';
+
   @override
   String get channelNameRequired => 'Il nome del canale è obbligatorio';