Add header files to cpp test.
#include "picosocks.h"
#include "picoquictest.h"
#include "picoquictest_internal.h"
+#include "picoquic_logger.h"
+#include "autoqlog.h"
+#include "picoquic_binlog.h"
+#include "picoquic_config.h"
+#include "tls_api.h"
extern "C" {
int cplusplustest() {
