Add an option to start on scans screen instead of capture screen

moneymgr_mobile/lib/services/storage/prefs.dart

@@ -15,6 +15,14 @@ Future<SharedPreferencesWithCache> prefs(Ref ref) =>
     );
 
 extension MoneyMgrSharedPreferences on SharedPreferencesWithCache {
+  bool startOnScansListScreen() {
+    return getBool("startOnScansListScreen") ?? false;
+  }
+
+  Future<void> setStartOnScansListScreen(bool start) async {
+    await setBool("startOnScansListScreen", start);
+  }
+
   ServerConfig? serverConfig() {
     final json = getString("serverConfig");
     if (json != null) return ServerConfig.fromJson(jsonDecode(json));