AIO commit

Sorry for the late commit, forgot to commit and push it on Saturday 7th.
Thank god there are moodle reminders

AdventOfCode/AdventOfCode.Test/Day6Test.cs

@@ -0,0 +1,28 @@
+namespace AdventOfCode.Test;
+
+public sealed class Day6Test
+{
+    private const string Input = "....#.....\r\n.........#\r\n..........\r\n..#.......\r\n.......#..\r\n..........\r\n.#..^.....\r\n........#.\r\n#.........\r\n......#...";
+    
+    [Fact]
+    public void Part1()
+    {
+        const int Expected = 41;
+        var day = new Day6();
+        
+        var result = day.Part1(Input);
+        
+        Assert.Equal(Expected, result);
+    }
+    
+    [Fact]
+    public void Part2()
+    {
+        const int Expected = 6;
+        var day = new Day6();
+        
+        var result = day.Part2(Input);
+        
+        Assert.Equal(Expected, result);
+    }
+}