Code Completion Support with Pre Generated Bindings

[EdSwordsmith]

The way these bindings work, does not give code completion support to the bindings that are generated in the compile time, so for supporting it on at least vscode which I can confirm it works if the bindings are pre generated and put inside lib.rs of gdnative-bindings.

https://github.com/EdSwordsmith/godot-rust
I have done that in this fork I have made, I built the bindings then copied the contents of the generated bindings_types.rs, bindings_traits.rs and bindings_methods.rs.

The person who had the idea of copying the contents of the bindings there was @Waridley, I would like to thank him for helping me get code completion working.

[Waridley]

Here's how I got it working myself by putting the bindings in /gdnative-bindings/src instead of OUT_DIR
Waridley@fcce3df

[ghost]

Duplicate of #140. Please continue discussion in the existing issue!