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_sl.arb

@@ -1049,6 +1049,8 @@
   "channelSecret": "Geslo kanala",
   "channelSecretHint": "Skupno geslo za ta kanal",
   "channelSecretHelp": "To geslo mora biti deljeno z vsemi člani ekipe, ki potrebujejo dostop do tega kanala",
+  "channelTypesInfo": "Hash kanali (#ekipa): Geslo samodejno generirano iz imena. Enako ime = isti kanal na vseh napravah.\n\nZasebni kanali: Uporabite eksplicitno geslo. Samo tisti z geslom se lahko pridružijo.",
+  "hashChannelInfo": "Hash kanal: Geslo bo samodejno generirano iz imena kanala. Kdorkoli uporabi isto ime, se bo pridružil istemu kanalu.",
   "channelNameRequired": "Ime kanala je obvezno",
   "channelNameTooLong": "Ime kanala mora imeti največ 31 znakov",
   "channelSecretRequired": "Geslo kanala je obvezno",
@@ -1056,6 +1058,10 @@
   "invalidAsciiCharacters": "Dovoljeni so samo ASCII znaki",
   "channelCreatedSuccessfully": "Kanal uspešno ustvarjen",
   "channelCreationFailed": "Neuspešno ustvarjanje kanala: {error}",
+  "deleteChannel": "Izbriši kanal",
+  "deleteChannelConfirmation": "Ali ste prepričani, da želite izbrisati kanal \"{channelName}\"? Tega dejanja ni mogoče razveljaviti.",
+  "channelDeletedSuccessfully": "Kanal uspešno izbrisan",
+  "channelDeletionFailed": "Neuspešno brisanje kanala: {error}",
   "allChannelSlotsInUse": "Vsa mesta za kanale so zasedena (maksimalno 39 prilagojenih kanalov)",
   "createChannel": "Ustvari kanal",