1.修复一个可能导致商店刷新时闪退的bug

---新功能 New Func----
class Enemy
func add_force_knockback(knockback_vector=Vector2.ZERO):
------------
class Boss
func add_force_knockback(knockback_vector=Vector2.ZERO):

1.bug 修复

新增一个 提示面板Tips，可通过信号onFocusManageReady获取popup后添加

----New signal----
AutoLoad class RunData
signal onFocusManageReady(focus_manage:FocusManage)
----New func----
AutoLoad SoundManager
func play_single(sound_id:String,sound:Resource,volume_mod:float,pitch_rand:float,always_play:bool)

新增信号 New Signal
--RunData
signal onUnitTakeDmg(unit,damage_info)
signal onPlayerHealStart(player,damage_info)
signal onItemInstanceAdded(icon_button:InventoryElement)
signal onItemUiShow(ui_node:ItemPanelUI)

新增功能 New Func
--Utils
func get_current_scene()->Node:
func wave_not_end(timeout:bool=false)->bool:
func floating_text(content:String, direction:Vector2, duration:float, spread:float, color:Color = Color.white, all_caps:bool = false)->void :
func is_custom_class(obj:Object,parent_script:Script)->bool:
func del_all_bbcode(strs:String)->String:

1.扩大子类函数接收的参数类型，以此解决继承关系紊乱导致的冲突

1.Rundata 新增两个信号
1.RunData add 2 signals