Script.PickBan.Complete Callback when you want to have a Pick and Ban through pyplanet

[w1lla]

Hi, in TM2020 a new callback is introduced for using pick and Ban
Callback return:
pickban_complete = Callback(
call='Script.PickBan.Complete',
namespace='trackmania',
code='pickban_complete',
target=handle_generic
)

Code to set it up:
Works only in Team GameModes:

		pickbandata = '{"steps":[{"team":1,"action":"ban"},{"team":1,"action":"pick"},{"team":2,"action":"pick"},{"team":3,"action":"pick"},{"team":4,"action":"pick"},{"team":5,"action":"pick"}],"stepDuration":60000,"resultDuration":10000}'
		
		await self.instance.gbx.script('PickBan.Start', pickbandata, encode_json=False, response_id=False),
		await self.instance.chat('$ff0Admin $fff{}$z$s$ff0 tried to do a pickban with following data: {}.'.format(
				player.nickname,pickbandata)
		)```