keyboard: Update reporting logic

Updates the reporting logic to wait for any key press or depress before
reading all keys and sending an update of all of the keys

Signed-off-by: Nicholas Mello <nick@nmello.dev>

src/keyboard.rs

@@ -1,4 +1,5 @@
 use crate::usb::KeyboardEvent;
+use defmt::info;
 use embassy_rp::gpio::Input;
 use embassy_sync::blocking_mutex::raw::RawMutex;
 use embassy_sync::channel::Sender;