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

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

src/Items/ItemHandler.cpp

@@ -709,7 +709,6 @@ bool cItemHandler::IsPlaceable(void)
 
 
 
-
 bool cItemHandler::CanRepairWithRawMaterial(short a_ItemType)
 {
 	UNUSED(a_ItemType);
@@ -840,10 +839,6 @@ cItemHandler::FoodInfo cItemHandler::GetFoodInfo(const cItem * a_Item)
 
 
 
-
-
-
-
 float cItemHandler::GetBlockBreakingStrength(BLOCKTYPE a_Block)
 {
 	return 1.0f;