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

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

src/Blocks/BlockHandler.cpp

@@ -91,7 +91,6 @@
 
 
 
-
 /*
 // Tests the meta rotation and mirroring.
 // Note that the cMetaRotator needs to have its assert paths disabled for this test to work!
@@ -577,6 +576,7 @@ void cBlockHandler::DropBlock(cChunkInterface & a_ChunkInterface, cWorldInterfac
 
 
 
+
 bool cBlockHandler::CanBeAt(cChunkInterface & a_ChunkInterface, int a_BlockX, int a_BlockY, int a_BlockZ, const cChunk & a_Chunk)
 {
 	return true;