Add unit test to check for duplicate log types

Content.Tests/Shared/Administration/Logs/LogTypeTests.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Linq;
+using Content.Shared.Administration.Logs;
+using NUnit.Framework;
+
+namespace Content.Tests.Shared.Administration.Logs;
+
+[TestFixture]
+public class LogTypeTests
+{
+    [Test]
+    public void Unique()
+    {
+        var types = Enum.GetValues<LogType>();
+        var duplicates = types
+            .GroupBy(x => x)
+            .Where(g => g.Count() > 1)
+            .Select(g => g.Key)
+            .ToArray();
+
+        Assert.That(duplicates.Length, Is.Zero, $"{nameof(LogType)} has duplicate values for: " + string.Join(", ", duplicates));
+    }
+}