Added build folder with working executable for midterm

Builds/MidTermBuild/PuzzlePlayer.runtimeconfig.json

+{
+  "runtimeOptions": {
+    "tfm": "net8.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "8.0.0"
+      },
+      {
+        "name": "Microsoft.WindowsDesktop.App",
+        "version": "8.0.0"
+      }
+    ],
+    "configProperties": {
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": true
+    }
+  }
+}
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