In an effort to improve compile times in general, and remove unnecessary
compile time dependencies, the code interface is not defined by default.
It is also now possible to define the code interface directly in the resource module,
via
```elixir
code_interface do
define_for ApiModule
end
```
If you need to reenable the code interface, simply add the following to your api module:
```elixir
resources do
define_interfaces? true
...
end
```
