is there an ergonomic way to assembly these bits into a byte?

I know that I could define a struct with bitbybit, but it seems overkill

```
    let bit0 = gpio_pins::FEATURE_DETECT0.read();
    let bit1 = gpio_pins::FEATURE_DETECT1.read();
    let bit2 = gpio_pins::FEATURE_DETECT2.read();
    let bit3 = gpio_pins::FEATURE_DETECT3.read();
```