Add core content definitions

godot/scripts/content/validation/ContentValidationResult.cs

@@ -0,0 +1,16 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace SideScrollerGame.Content.Validation;
+
+public sealed class ContentValidationResult
+{
+    public ContentValidationResult(IEnumerable<ContentValidationMessage> messages)
+    {
+        Messages = messages.ToList();
+    }
+
+    public IReadOnlyList<ContentValidationMessage> Messages { get; }
+
+    public bool HasErrors => Messages.Any(message => message.Severity == ContentValidationSeverity.Error);
+}