fix styles on the add card page, move the parser to a separate file, change the styles of the page of one news item, add a parser for the subscription page, add the input field for the qr code

lib/presentation/components/subscription_card.dart

@@ -69,6 +69,7 @@ class SubscriptionCard extends StatelessWidget {
             subscription.shortDescription,
             style: TextStyle(color: Colors.white.withOpacity(0.7), fontSize: 14),
           ),
+          Spacer(),
           if (isActive && expiredAt != null) ...[
             const SizedBox(height: 16),
             Builder(