Add serial.h to properly setup the serial port.

Change-Id: I0a61d2d251ad8f0d3cfbb53c5d1b66dd03873e16
diff --git a/y2019/jevois/serial.h b/y2019/jevois/serial.h
new file mode 100644
index 0000000..9dd4b0c
--- /dev/null
+++ b/y2019/jevois/serial.h
@@ -0,0 +1,12 @@
+#ifndef Y2019_JEVOIS_SERIAL_H_
+#define Y2019_JEVOIS_SERIAL_H_
+
+namespace y2019 {
+namespace jevois {
+
+int open_via_terminos(const char *tty_name);
+
+}  // namespace jevois
+}  // namespace frc971
+
+#endif  // Y2019_JEVOIS_SERIAL_H_