Add project files.

LeagueAPI/Utils/PortTokenWithProcessList.cs

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+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Text.RegularExpressions;
+
+namespace LeagueAPI.Utils;
+
+internal partial class PortTokenWithProcessList : IPortTokenBehavior
+{
+    [GeneratedRegex("--remoting-auth-token=([\\w-]*)")]
+    private static partial Regex AuthTokenRegex();
+    [GeneratedRegex("--app-port=([0-9]*)")]
+    private static partial Regex AppPortRegex();
+
+    public bool TryGet(Process process, out string remotingAuthToken, out int appPort, [NotNullWhen(false)] out Exception? exception)
+    {
+        try
+        {
+            ProcessStartInfo startInfo;
+            if (OperatingSystem.IsWindows())
+            {
+                startInfo = new ProcessStartInfo
+                {
+                    FileName = "powershell.exe",
+                    Arguments = "Get-CimInstance Win32_Process -Filter \"\"\"name = 'LeagueClientUx.exe'\"\"\" | Select-Object -ExpandProperty CommandLine",
+                    WindowStyle = ProcessWindowStyle.Hidden,
+                    CreateNoWindow = true,
+                    RedirectStandardOutput = true,
+                    RedirectStandardError = true
+                };
+            }
+            else
+            {
+                if (!OperatingSystem.IsMacOS())
+                {
+                    throw new PlatformNotSupportedException("This behavior is only supported on Windows or MacOS.");
+                }
+
+                startInfo = new ProcessStartInfo
+                {
+                    FileName = "/bin/bash",
+                    Arguments = "-c \"ps x -o args | grep 'LeagueClientUx'\"",
+                    WindowStyle = ProcessWindowStyle.Hidden,
+                    CreateNoWindow = true,
+                    RedirectStandardOutput = true,
+                    RedirectStandardError = true
+                };
+            }
+
+            using Process process2 = new()
+            {
+                StartInfo = startInfo
+            };
+            process2.Start();
+            process2.WaitForExit();
+            string text = process2.StandardOutput.ReadToEnd();
+            string text2 = process2.StandardError.ReadToEnd();
+            if (string.IsNullOrEmpty(text))
+            {
+                if (!string.IsNullOrEmpty(text2))
+                {
+                    throw new Exception(text2);
+                }
+
+                throw new FormatException("The output string is empty.");
+            }
+
+            remotingAuthToken = AuthTokenRegex().Match(text).Groups[1].Value;
+            appPort = int.Parse(AppPortRegex().Match(text).Groups[1].Value);
+            exception = null;
+            return true;
+        }
+        catch (Exception ex)
+        {
+            remotingAuthToken = string.Empty;
+            appPort = 0;
+            exception = ex;
+            return false;
+        }
+    }
+}