Add firmware version consistency check in Rust API

tele0592/examples/simple.rs

 use color_eyre::eyre::Context;
 use std::time::{Duration, Instant};
-use tele0592::{Controller as _, Device as _};
+use tele0592::Controller as _;
 
 fn main() -> color_eyre::Result<()> {
     color_eyre::install()?;
     let mut controller = rppal::i2c::I2c::with_bus(8).with_context(|| "opening I²C bus")?;
-    println!("Firmware version: {:?}", controller.firmware_version()?);
+    println!(
+        "Firmware version: {:?}",
+        controller.check_firmware_version()?
+    );
     controller.set_motor_shutdown_timeout(Duration::from_secs(3))?;
     let timeout = controller.get_motor_shutdown_timeout()?;
     println!("Motor shutdown timeout set to {timeout:?}");