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_hr.dart

@@ -2066,6 +2066,14 @@ class AppLocalizationsHr extends AppLocalizations {
   String get channelSecretHelp =>
       'Ova lozinka mora biti podijeljena sa svim članovima tima koji trebaju pristup ovom kanalu';
 
+  @override
+  String get channelTypesInfo =>
+      'Hash kanali (#tim): Lozinka automatski generirana iz imena. Isto ime = isti kanal na svim uređajima.\n\nPrivatni kanali: Koristite eksplicitnu lozinku. Samo oni s lozinkom se mogu pridružiti.';
+
+  @override
+  String get hashChannelInfo =>
+      'Hash kanal: Lozinka će biti automatski generirana iz imena kanala. Bilo tko tko koristi isto ime pridružit će se istom kanalu.';
+
   @override
   String get channelNameRequired => 'Ime kanala je obavezno';