Add a short program to dump key information.

show-keys

@@ -0,0 +1,15 @@
+#!env python3
+import keyboard
+
+def main() -> None:
+	keyboard.hook(_on_event)
+	try:
+		keyboard.wait()
+	except KeyboardInterrupt:
+		print("End.")
+
+def _on_event(event: keyboard.KeyboardEvent) -> None:
+	print(event.to_json())
+
+if __name__ == "__main__":
+	main()