#401 Refactor multi-ACK localization strings and settings UI

- Updated localization files for multiple languages to change the representation of multi-ACK settings from a string with a placeholder to a simple string.
- Removed unnecessary placeholder definitions for multi-ACK in localization files.
- Adjusted the settings screen to replace the slider for multi-ACK with a switch, simplifying the user interface.
- Updated the Podfile.lock to remove the wakelock_plus dependency.

lib/l10n/app_localizations_de.dart

@@ -435,9 +435,7 @@ class AppLocalizationsDe extends AppLocalizations {
       'Ort in der Anzeige einbeziehen';
 
   @override
-  String settings_multiAck(String value) {
-    return 'Mehrfach-Bestätigungen: $value';
-  }
+  String get settings_multiAck => 'Mehrere Bestätigungen';
 
   @override
   String get settings_telemetryModeUpdated => 'Telemetriemodus aktualisiert';