CheckBasicStyle: Check number of empty lines between functions (#4267)

Add check for number of empty lines between functions and fix the corresponding failures

src/Mobs/Chicken.cpp

@@ -7,8 +7,6 @@
 
 
 
-
-
 cChicken::cChicken(void) :
 	super("Chicken", mtChicken, "entity.chicken.hurt", "entity.chicken.death", 0.4, 0.7),
 	m_EggDropTimer(0)
@@ -20,6 +18,7 @@ cChicken::cChicken(void) :
 
 
 
+
 void cChicken::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	super::Tick(a_Dt, a_Chunk);