Replace score icons with a single icon indicator (#1341)

* New score single-side score indicator icon using stacked arrows

* formatting

lib/community/widgets/post_card_metadata.dart

@@ -1,3 +1,4 @@
+import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 
 import 'package:lemmy_api_client/v3.dart';
@@ -138,14 +139,25 @@ class ScorePostCardMetaData extends StatelessWidget {
       crossAxisAlignment: WrapCrossAlignment.center,
       runAlignment: WrapAlignment.center,
       children: [
-        Icon(Icons.arrow_upward, size: 17.0, color: color),
+        SizedBox(
+          width: 21,
+          height: 17,
+          child: Stack(
+            children: [
+              Align(alignment: Alignment.topLeft, child: Icon(Icons.arrow_upward, size: 13.5, color: voteType == -1 ? readColor : color)),
+              Align(
+                alignment: Alignment.bottomRight,
+                child: Icon(Icons.arrow_downward, size: 13.5, color: voteType == 1 ? readColor : color),
+              ),
+            ],
+          ),
+        ),
         ScalableText(
           formatNumberToK(score ?? 0),
           semanticsLabel: l10n.xScore(formatNumberToK(score ?? 0)),
           fontScale: state.metadataFontSizeScale,
           style: theme.textTheme.bodyMedium?.copyWith(color: color),
         ),
-        Icon(Icons.arrow_downward, size: 17.0, color: color),
       ],
     );
   }