Moved PathFragments from SetupTmplCode to extra class.

Creator/PathFragments.cs

@@ -0,0 +1,25 @@
+using System.IO;
+using System.Linq;
+
+namespace KattekerCreator
+{
+    public class PathFragments
+    {
+        private readonly string[] _fragments;
+
+        public PathFragments(string path)
+        {
+            _fragments = path.Split(Path.PathSeparator);
+        }
+
+        public int FragmentLength => _fragments.Length;
+
+        public override bool Equals(object obj) => string.Equals(ToString(), obj?.ToString());
+
+        public override int GetHashCode() => (_fragments != null ? _fragments.GetHashCode() : 0);
+
+        public override string ToString() => string.Join(Path.PathSeparator.ToString(), _fragments.Take(_fragments.Length - 1));
+
+        protected bool Equals(PathFragments other) => Equals(_fragments, other._fragments);
+    }
+}