Refactor path normalization to use PathNormalizer

Replaces custom path normalization logic in PetroglyphFileSystem with PathNormalizer from AnakinRaW.CommonUtilities. Moves LinuxDirectorySeparatorNormalizeOptions to a static readonly field. Cleans up unused usings and retains legacy code as comments for reference.

Author: AnakinRaW

src/PetroglyphTools/PG.StarWarsGame.Engine.FileSystem/IO/PetroglyphFileSystem.Normalize.cs

@@ -1,9 +1,5 @@
 using System;
-using System.IO;
-using System.IO.Abstractions;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-using Microsoft.Extensions.DependencyInjection;
+using AnakinRaW.CommonUtilities.FileSystem.Normalization;
 using PG.StarWarsGame.Engine.Utilities;
 
 namespace PG.StarWarsGame.Engine.IO;
@@ -15,17 +11,17 @@ internal void NormalizePath(ref ValueStringBuilder stringBuilder)
         NormalizePath(stringBuilder.RawChars.Slice(0, stringBuilder.Length));
     }
 
-    // TODO: Check whether we can eliminate the double slash normalization
-    // once we migrated to PGFileSystem
     private static void NormalizePath(Span<char> path)
     {
-        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-            return;
-        for (var i = 0; i < path.Length; i++)
-        {
-            var c = path[i];
-            if (IsDirectorySeparator(c))
-                path[i] = '/';
-        }
+        PathNormalizer.Normalize(path, path, LinuxDirectorySeparatorNormalizeOptions);
+        
+        //if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        //    return;
+        //for (var i = 0; i < path.Length; i++)
+        //{
+        //    var c = path[i];
+        //    if (IsDirectorySeparator(c))
+        //        path[i] = '/';
+        //}
     } 
 }

src/PetroglyphTools/PG.StarWarsGame.Engine.FileSystem/IO/PetroglyphFileSystem.PathEqual.cs

@@ -7,11 +7,6 @@ namespace PG.StarWarsGame.Engine.IO;
 
 public sealed partial class PetroglyphFileSystem
 {
-    private static readonly PathNormalizeOptions LinuxDirectorySeparatorNormalizeOptions = new PathNormalizeOptions
-    {
-        TreatBackslashAsSeparator = true,
-        UnifyDirectorySeparators = true
-    };
 
     public bool PathsAreEqual(string pathA, string pathB)
     {

src/PetroglyphTools/PG.StarWarsGame.Engine.FileSystem/IO/PetroglyphFileSystem.cs

@@ -1,8 +1,9 @@
+using AnakinRaW.CommonUtilities.FileSystem.Normalization;
+using Microsoft.Extensions.DependencyInjection;
 using System;
 using System.IO;
 using System.IO.Abstractions;
 using System.Runtime.CompilerServices;
-using Microsoft.Extensions.DependencyInjection;
 
 namespace PG.StarWarsGame.Engine.IO;
 
@@ -17,6 +18,13 @@ public sealed partial class PetroglyphFileSystem
     private const char DirectorySeparatorChar = '/';
     private const char AltDirectorySeparatorChar = '\\';
 
+    private static readonly PathNormalizeOptions LinuxDirectorySeparatorNormalizeOptions = new()
+    {
+        TreatBackslashAsSeparator = true, // Ensure that we treat backslashes as separators on Linux
+        UnifyDirectorySeparators = true,
+        UnifySeparatorKind = DirectorySeparatorKind.System
+    };
+
     private readonly IFileSystem _underlyingFileSystem;
 
     /// <summary>