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

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

src/Entities/LeashKnot.cpp

@@ -80,7 +80,6 @@ void cLeashKnot::TiePlayersLeashedMobs(cPlayer & a_Player, bool a_ShouldBroadcas
 
 
 
-
 void cLeashKnot::KilledBy(TakeDamageInfo & a_TDI)
 {
 	super::KilledBy(a_TDI);
@@ -115,6 +114,7 @@ void cLeashKnot::SpawnOn(cClientHandle & a_ClientHandle)
 
 
 
+
 void cLeashKnot::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 {
 	m_TicksAlive++;