Crash because ___init_method_bindings is not reliable

Ok this is a very very very annoying problem. It used to be so that we would lazy bind function pointers. Now this is part of the generation code and we call ___init_method_bindings on every class when the library initialises.

I have two problems with this.

First off all, the ARVR drivers are implemented as singletons, there is no guarantee when trying to use Godot classes that ___init_method_bindings has already been called for that class. This is called from nativescript_init which is called when godot_nativescript_init is called in your plugin. The problem is that godot_nativescript_init only gets called the first time you actually try and load a .gdns file. It is not uncommon for ARVR drivers to not have any of those.
This leads up to the crash.

Second reason I'm not a fan is that Godot has over 1200 classes. That means when my module loads correctly, I'm caching function pointers for over 1200 classes, when I have multiple modules, we're doing this multiple times. In reality I may end up using maybe 10 of those classes at maximum?

The lazy binding approach was way better than the new approach IMHO.