Added builder

Added shader importer

Nerfed.Builder/Builder/Importers/RawFileImporter.cs

@@ -0,0 +1,9 @@
+namespace Nerfed.Builder;
+
+public class RawFileImporter : IImporter
+{
+    public void Import(string inFile, string outFile)
+    {
+        FileUtil.Copy(inFile, outFile);
+    }
+}

Nerfed.Builder/Builder/Importers/ShaderImporter.cs

@@ -0,0 +1,33 @@
+using System.Diagnostics;
+
+namespace Nerfed.Builder;
+
+public class ShaderImporter : IImporter
+{
+    public void Import(string inFile, string outFile)
+    {
+        using (Process proc = new Process())
+        {
+            string glslc;
+            if (OperatingSystem.IsWindows())
+            {
+                glslc = "Win64/glslc.exe";
+            }
+            else if (OperatingSystem.IsLinux())
+            {
+                glslc = "Linux/glslc";
+            }
+            else
+            {
+                throw new PlatformNotSupportedException("No shader compiler found for current platform");
+            }
+
+            proc.StartInfo.FileName = glslc;
+            proc.StartInfo.Arguments = @$"""{inFile}"" -o ""{outFile}"" -c";
+            proc.StartInfo.CreateNoWindow = true;
+            proc.StartInfo.UseShellExecute = false;
+            proc.Start();
+            proc.WaitForExit();
+        }
+    }
+}