~/.config/sway: Run and hide `healthy` on startup

It's healthy!  https://github.com/heyLu/healthy

.config/sway/config

@@ -245,6 +245,13 @@ for_window [title="PICO-8"] {
	floating enable
}
for_window [app_id="healthy"] {
	floating enable
	move to scratchpad
}
exec healthy
#
# Status Bar:
#