[Keyboard] frobiac custom boards and layout (#19883)

keyboards/frobiac/blackflat/config.h

@@ -0,0 +1,12 @@
+// Copyright 2023 @frobiac
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#ifdef PS2_MOUSE_ENABLE
+#    define PS2_DATA_PIN D4
+#    define PS2_CLOCK_PIN B3
+
+#    define PS2_MOUSE_USE_REMOTE_MODE
+#    define PS2_MOUSE_INIT_DELAY 1000
+#endif