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

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

src/HTTP/HTTPMessageParser.cpp

@@ -119,6 +119,7 @@ void cHTTPMessageParser::Reset(void)
 
 
 
+
 size_t cHTTPMessageParser::ParseFirstLine(void)
 {
 	auto idxLineEnd = m_Buffer.find("\r\n");
@@ -136,6 +137,7 @@ size_t cHTTPMessageParser::ParseFirstLine(void)
 
 
 
+
 size_t cHTTPMessageParser::ParseBody(const char * a_Data, size_t a_Size)
 {
 	if (m_TransferEncodingParser == nullptr)