Add support for MacroCat Keyboard (#17480)

keyboards/macrocat/config.h

@@ -0,0 +1,11 @@
+// Copyright 2022 catmunch (@catmunch)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "config_common.h"
+
+/* rotary encoder */
+#define ENCODERS_PAD_A { D3 }
+#define ENCODERS_PAD_B { D2 }
+#define ENCODER_SWITCH B7