uses a proc-macro to automate command definitions

api-proc-macro/tests/into_command_definition/unnamed_struct_fails.rs

@@ -0,0 +1,8 @@
+use api_proc_macro::IntoCommandDefinition;
+
+#[derive(IntoCommandDefinition)]
+struct TestUnnamedStruct(f32, f64, bool);
+
+fn main() {
+
+}