Add dummy 86Box Unit Tester device

src/include/86box/unittester.h

@@ -0,0 +1,35 @@
+/*
+ * 86Box    A hypervisor and IBM PC system emulator that specializes in
+ *          running old operating systems and software designed for IBM
+ *          PC systems and compatibles from 1981 through fairly recent
+ *          system designs based on the PCI bus.
+ *
+ *          This file is part of the 86Box distribution.
+ *
+ *          Debug device for assisting in unit testing.
+ *
+ *
+ *
+ * Authors: GreaseMonkey, <thematrixeatsyou+86b@gmail.com>
+ *
+ *          Copyright 2024 GreaseMonkey.
+ */
+
+#ifndef UNITTESTER_H
+#define UNITTESTER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Global variables. */
+extern const device_t unittester_device;
+
+/* Functions. */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*UNITTESTER_H*/
+