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

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

src/MobProximityCounter.cpp

@@ -36,6 +36,10 @@ void cMobProximityCounter::CollectMob(cEntity & a_Monster, cChunk & a_Chunk, dou
 
 }
 
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 void cMobProximityCounter::convertMaps()
 {
 	for (tMonsterToDistance::const_iterator itr = m_MonsterToDistance.begin(); itr != m_MonsterToDistance.end(); ++itr)
@@ -44,6 +48,10 @@ void cMobProximityCounter::convertMaps()
 	}
 }
 
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 cMobProximityCounter::sIterablePair cMobProximityCounter::getMobWithinThosesDistances(double a_DistanceMin, double a_DistanceMax)
 {
 	sIterablePair toReturn;