added macos support and changed gridview count for iphone and macos

lib/screens/gameboard.dart

@@ -58,14 +58,15 @@ class _PlayerGridViewState extends State<PlayerGridView> {
       body: Container(
         color: isNight
             ? const Color(0xff2d2d2d)
-            : Color.fromARGB(255, 194, 216, 225),
+            : const Color.fromARGB(255, 194, 216, 225),
         padding: const EdgeInsets.only(left: 15, right: 15),
         child: Column(
           children: [
             Expanded(
               child: GridView.builder(
-                gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
-                  crossAxisCount: 2,
+                gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
+                  crossAxisCount:
+                      MediaQuery.of(context).size.shortestSide < 600 ? 2 : 4,
                   mainAxisSpacing: 10,
                   crossAxisSpacing: 10,
                 ),

macos/Runner.xcodeproj/project.pbxproj

@@ -227,7 +227,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0920;
-				LastUpgradeCheck = 1300;
+				LastUpgradeCheck = 1510;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					331C80D4294CF70F00263BE5 = {

macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1300"
+   LastUpgradeVersion = "1510"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"