feat: Added DamageDescription class

+ Added onPlayerDamage event

g2o/damage.py

@@ -0,0 +1,58 @@
+import sqg2o
+
+class DamageDescription(sqg2o.DamageDescription):
+    
+    def __init__(self):
+        return super().__init__()
+    
+    @property
+    def item_instance(self):
+        return super().item_instance
+    
+    @property
+    def flags(self):
+        return super().flags
+    
+    @flags.setter
+    def flags(self, value):
+        super().flags = value
+        
+    @property
+    def damage(self):
+        return super().damage
+    
+    @damage.setter
+    def damage(self, value):
+        super().damage = value
+        
+    @property
+    def distance(self):
+        return super().distance
+    
+    @distance.setter
+    def distance(self, value):
+        super().distance = value
+        
+    @property
+    def spell_id(self):
+        return super().spell_id
+    
+    @spell_id.setter
+    def spell_id(self, value):
+        super().spell_id = value
+        
+    @property
+    def spell_level(self):
+        return super().spell_level
+    
+    @spell_level.setter
+    def spell_level(self, value):
+        super().spell_level = value
+        
+    @property
+    def node(self):
+        return super().node
+    
+    @node.setter
+    def node(self, value):
+        super().node = value