[Keyboard] MountainBlocks MB17 (#8554)

* initial commit

* preliminary support for mb17 using the qmk default keymap

* add the VIA keymap

* add qmk configurator support

* code cleanups before submission

* Update keyboards/mountainblocks/mb17/rules.mk

* Update keyboards/mountainblocks/mb17/info.json

* remove file

keyboards/mountainblocks/mb17/mb17.h

@@ -0,0 +1,35 @@
+/* Copyright 2020 mechmerlin
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+#define ___ KC_NO
+
+#define LAYOUT_numpad_5x4( \
+    k00, k01, k02, k03,    \
+    k10, k11, k12,         \
+    k20, k21, k22, k23,    \
+    k30, k31, k32,         \
+    k41, k42,      k43     \
+){ \
+    { k00, k01, k02, k03 },  \
+    { k10, k11, k12, ___ },  \
+    { k20, k21, k22, k23 },  \
+    { k30, k31, k32, ___ },  \
+    { ___, k41, k42, k43 }   \
+}