TBMM/GCMM/SymLinks.cs

using System.Diagnostics;

namespace GCMM
{
    public class SymLinks
    {
        public static bool CreateFolderSymbolicLink(string source, string target)
        {
            var proc = Process.Start(new ProcessStartInfo("cmd.exe", $"/c mklink /J \"{source}\" \"{target}\""));
            proc?.WaitForExit();
            return proc?.ExitCode == 0;
        }
    }
}