Add general swipe and drag examples

example/examples/general/swipe/swipe.gui_script

@@ -0,0 +1,35 @@
+local druid = require("druid.druid")
+
+
+local function on_swipe_callback(self, direction, distance, swipe_time)
+	self.text:set_to(direction)
+	print(direction, distance, swipe_time)
+end
+
+
+function init(self)
+	self.druid = druid.new(self)
+
+	self.text = self.druid:new_text("text_value")
+	self.swipe = self.druid:new_swipe("swipe_node", on_swipe_callback)
+end
+
+
+function final(self)
+	self.druid:final()
+end
+
+
+function update(self, dt)
+	self.druid:update(dt)
+end
+
+
+function on_message(self, message_id, message, sender)
+	self.druid:on_message(message_id, message, sender)
+end
+
+
+function on_input(self, action_id, action)
+	return self.druid:on_input(action_id, action)
+end