Allow opening the config gui from the mod menu

src/main/java/club/sk1er/patcher/Patcher.java

@@ -80,7 +80,7 @@
 import java.util.concurrent.CompletableFuture;
 import java.util.stream.Collectors;
 
-@Mod(modid = "patcher", name = "Patcher", version = Patcher.VERSION, clientSideOnly = true)
+@Mod(modid = "patcher", name = "Patcher", version = Patcher.VERSION, clientSideOnly = true, guiFactory = "club.sk1er.patcher.config.DummyForgeConfig")
 public class Patcher {
 
     @Mod.Instance("patcher")

src/main/java/club/sk1er/patcher/config/DummyForgeConfig.java

@@ -0,0 +1,49 @@
+package club.sk1er.patcher.config;
+
+import club.sk1er.patcher.Patcher;
+import gg.essential.api.utils.GuiUtil;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.GuiScreen;
+import net.minecraftforge.fml.client.IModGuiFactory;
+
+import java.util.Set;
+
+@SuppressWarnings("unused")
+public class DummyForgeConfig implements IModGuiFactory {
+    @Override
+    public void initialize(Minecraft minecraft) {
+    }
+
+    @Override
+    public Set<RuntimeOptionCategoryElement> runtimeGuiCategories() {
+        return null;
+    }
+
+    //#if MC==10809
+    @Override
+    public Class<? extends GuiScreen> mainConfigGuiClass() {
+        return DummyForgeConfigGUI.class;
+    }
+
+    @Override
+    public RuntimeOptionGuiHandler getHandlerFor(RuntimeOptionCategoryElement runtimeOptionCategoryElement) {
+        return null;
+    }
+    //#else
+    //$$ @Override
+    //$$ public boolean hasConfigGui() {
+    //$$     return true;
+    //$$ }
+
+    //$$ @Override
+    //$$ public GuiScreen createConfigGui(GuiScreen guiScreen) {
+    //$$     return Patcher.instance.getPatcherConfig().gui();
+    //$$ }
+    //#endif
+
+    public static class DummyForgeConfigGUI extends GuiScreen {
+        public DummyForgeConfigGUI(GuiScreen parent) {
+            GuiUtil.open(Patcher.instance.getPatcherConfig().gui());
+        }
+    }
+}