Input refactor to allow arbitrary bindings

src/main/main.cpp

@@ -184,6 +184,7 @@ int main(int argc, char** argv) {
     };
 
     ultramodern::input_callbacks_t input_callbacks{
+        .poll_input = recomp::poll_inputs,
         .get_input = recomp::get_n64_input,
     };