Port to 1.20.6

- Port to 1.20.6
- Move compatibility code into individual classes

settings.gradle

@@ -4,6 +4,7 @@ pluginManagement {
             name = 'Fabric'
             url = 'https://maven.fabricmc.net/'
         }
+        maven { url "https://maven.architectury.dev/" }
         gradlePluginPortal()
     }
 }