reorganize module

_archive/rhai_engine/rhaibook/rust/disable-custom.md

@@ -0,0 +1,12 @@
+Disable Custom Types
+====================
+
+{{#include ../links.md}}
+
+The [`no_object`] feature disables support for [custom types] including:
+
+* [_method-style_]({{rootUrl}}/rust/methods.md}}) function calls (e.g. `obj.method()`),
+
+* [object maps] and the [`Map`] type,
+
+* the `register_get`, `register_set` and `register_get_set` APIs for [`Engine`]