refactor(lib): utilize spawn event

lib/automation.lua

@@ -111,6 +111,10 @@ function attack_entities(target_kind, minimum)
 end
 
 function check_food(hunger)
+	if not hunger then
+		hunger = client.hunger
+	end
+
 	if hunger.food >= 20 then
 		return
 	end

lib/events.lua

@@ -61,9 +61,11 @@ function update_listeners()
 			message = function()
 				info("bot successfully logged in!")
 			end,
+		},
+		spawn = {
 			eat = function()
 				sleep(5000)
-				check_food(client.hunger)
+				check_food()
 			end,
 		},
 		death = {