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

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

src/RankManager.cpp

@@ -770,7 +770,6 @@ std::vector<cUUID> cRankManager::GetAllPlayerUUIDs(void)
 
 
 
-
 AStringVector cRankManager::GetAllRanks(void)
 {
 	ASSERT(m_IsInitialized);
@@ -2202,7 +2201,6 @@ bool cRankManager::UpdatePlayerName(const cUUID & a_PlayerUUID, const AString &
 
 
 
-
 bool cRankManager::AreDBTablesEmpty(void)
 {
 	return (
@@ -2275,6 +2273,7 @@ void cRankManager::CreateDefaults(void)
 
 
 
+
 bool cRankManager::DoesColumnExist(const char * a_TableName, const char * a_ColumnName)
 {
 	try