fix classloading for mod menu by moving registration methods to OmegaConfigGui class, fix versioning

omega-config-gui/src/main/java/draylar/omegaconfiggui/mixin/ModMenuMixin.java

@@ -1,6 +1,7 @@
 package draylar.omegaconfiggui.mixin;
 
 import com.terraformersmc.modmenu.ModMenu;
+import draylar.omegaconfiggui.OmegaConfigGui;
 import draylar.omegaconfiggui.api.screen.OmegaModMenu;
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
@@ -15,9 +16,9 @@ public class ModMenuMixin {
 
     @Inject(method = "onInitializeClient", at = @At("RETURN"), remap = false)
     private void addOmegaConfigurationScreens(CallbackInfo ci) {
-        OmegaModMenu.modMenuInitialized = true;
+        OmegaConfigGui.modMenuInitialized = true;
 
         // Add loaded configuration screens to mod menu.
-        OmegaModMenu.getRegisteredConfigurations().forEach(OmegaModMenu::injectScreen);
+        OmegaConfigGui.getConfigScreenFactories().forEach(OmegaModMenu::injectScreen);
     }
 }