feat!: Removed AddAdditionalMethods

It has been replaced with the add_methods device attribute.

automation_lib/src/lua/traits.rs

@@ -78,9 +78,3 @@ pub trait OpenClose {
     }
 }
 impl<T> OpenClose for T where T: google_home::traits::OpenClose {}
-
-pub trait AddAdditionalMethods {
-    fn add_methods<M: mlua::UserDataMethods<Self>>(methods: &mut M)
-    where
-        Self: Sized + 'static;
-}