Added builder

Added shader importer

Nerfed.Builder/Program.cs

@@ -0,0 +1,70 @@
+using System.Diagnostics;
+
+namespace Nerfed.Builder;
+
+internal class Program
+{
+    private static int Main(string[] args)
+    {
+        if (Debugger.IsAttached)
+        {
+            return Run(args);
+        }
+        else
+        {
+            try
+            {
+                return Run(args);
+            }
+            catch (Exception e)
+            {
+                Console.Error.WriteLine(e.Message);
+                return -1;
+            }
+        }
+    }
+
+    private static int Run(string[] rawArgs)
+    {
+        if (rawArgs.Length == 0)
+        {
+            Console.Error.WriteLine($"Invalid build type '{rawArgs[0]}' expected '-build' or '-package'");
+            return -1;
+        }
+
+        string buildType = rawArgs[0].ToLower();
+        if (buildType == "-build")
+        {
+            ArgsParser<BuildArgs> parser = new ArgsParser<BuildArgs>(rawArgs);
+            if (!parser.Parse())
+            {
+                Console.Error.Write("Failed to parse build arguments");
+                return -1;
+            }
+
+            using (Builder builder = new Builder())
+            {
+                builder.Run(parser.Arguments);
+            }
+        }
+        else if (buildType == "-package")
+        {
+            ArgsParser<PackageArgs> parser = new ArgsParser<PackageArgs>(rawArgs);
+            if (!parser.Parse())
+            {
+                Console.Error.Write("Failed to parse package arguments");
+                return -1;
+            }
+
+            using (Packager packager = new Packager())
+            {
+                packager.Run(parser.Arguments);
+            }
+
+            Console.Error.WriteLine("Packaging not yet implemented");
+            return -1;
+        }
+
+        return 0;
+    }
+}