Support for getting severity from single diagnostic

PorygonSharp/DiagnosticHandling/DiagnosticItem.cs

@@ -8,7 +8,7 @@ namespace PorygonSharp.DiagnosticHandling
         [StructLayout(LayoutKind.Sequential)]
         public struct InternalRepresentation
         {
-            private readonly int            _severity;
+            private readonly DiagnosticSeverity            _severity;
             private readonly DiagnosticCode _code;
             private readonly uint           _start;
             private readonly uint           _length;
@@ -17,6 +17,11 @@ namespace PorygonSharp.DiagnosticHandling
             {
                 return _code;
             }
+
+            public DiagnosticSeverity GetSeverity()
+            {
+                return _severity;
+            }
         }
 
         private InternalRepresentation _internalRepresentation;
@@ -51,5 +56,10 @@ namespace PorygonSharp.DiagnosticHandling
         {
             return Internal.GetCode();
         }
+
+        public DiagnosticSeverity GetSeverity()
+        {
+            return Internal.GetSeverity();
+        }
     }
 }

PorygonSharp/DiagnosticHandling/DiagnosticSeverity.cs

@@ -0,0 +1,9 @@
+namespace PorygonSharp.DiagnosticHandling
+{
+    public enum DiagnosticSeverity
+    {
+        Info,
+        Warning,
+        Error
+    }
+}