Add compile date to shell version command's output

stm-firmware/shell.c

@@ -28,7 +28,8 @@ static shellmatta_retCode_t shell_cmd_ver(const shellmatta_handle_t   handle,
 	(void)arguments;
 	(void)length;
 
-	shellmatta_printf(handle, "Reflow Oven Controller Firmware %s", xstr(GIT_VER));
+	shellmatta_printf(handle, "Reflow Oven Controller Firmware " xstr(GIT_VER) "\r\n"
+				"Compiled: " __DATE__);
 
 	return SHELLMATTA_OK;
 }