Made the impl_device macro more explicit about the implemented traits

This also converts impl_device into a procedural macro and get rid of a
lot of "magic" that was happening.

automation_macro/src/lib.rs

@@ -1,12 +1,20 @@
 #![feature(iter_intersperse)]
+mod impl_device;
 mod lua_device_config;
 
 use lua_device_config::impl_lua_device_config_macro;
 use syn::{DeriveInput, parse_macro_input};
 
+use crate::impl_device::impl_device_macro;
+
 #[proc_macro_derive(LuaDeviceConfig, attributes(device_config))]
 pub fn lua_device_config_derive(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
     let ast = parse_macro_input!(input as DeriveInput);
 
     impl_lua_device_config_macro(&ast).into()
 }
+
+#[proc_macro]
+pub fn impl_device(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    impl_device_macro(input)
+}