Added Bloodsucker boss and boss health bar

[b]New[/b] [img]{STEAM_CLAN_IMAGE}/42161504/c1699a8463883e29ae351723186a8ba7b911b459.png[/img] 1. Add bloodsucker boss 2. Add the blood bar of the blood-sucking boss [b]Next step[/b] 1. Modify the shape of the blood bar. 2. Added needles for bloodsucker attack.