add: threaded prototype press checker

src/main.rs

@@ -2,7 +2,7 @@ use std::{io::Write, thread::sleep};
 #[macro_use]
 extern crate lazy_static;
 
-fn main() -> ! {
+fn main() -> () {
     lazy_static! {
         static ref D: evdev::Device = {
             let d = pick_device();
@@ -10,12 +10,23 @@ fn main() -> ! {
         };
     }
     println!("{}", D.name().unwrap_or("Unknown device"));
-    loop {
+
+    let side_handle = std::thread::spawn(|| loop {
         if D.get_key_state().unwrap().contains(evdev::Key::BTN_SIDE) {
             println!("BTN_SIDE");
         }
         std::thread::sleep(std::time::Duration::from_millis(100));
-    }
+    });
+
+    let extra_handle = std::thread::spawn(|| loop {
+        if D.get_key_state().unwrap().contains(evdev::Key::BTN_EXTRA) {
+            println!("BTN_EXTRA");
+        }
+        std::thread::sleep(std::time::Duration::from_millis(100));
+    });
+
+    extra_handle.join().expect("Couldn't join");
+    side_handle.join().expect("Couldn't join");
 }
 
 fn pick_device() -> evdev::Device {