added 0xCB/1337 keyboard (#12089)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/0xcb/1337/1337.h

@@ -0,0 +1,38 @@
+/*
+Copyright 2021 0xCB - Conor Burns
+
+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"
+
+/* This a shortcut to help you visually see your layout.
+ *
+ * The first section contains all of the arguments representing the physical
+ * layout of the board and position of the keys.
+ *
+ * The second converts the arguments into a two-dimensional array which
+ * represents the switch matrix.
+ */
+ #define LAYOUT( \
+     KA1, KA2, KA3, \
+     KB1, KB2, KB3, \
+     KC1, KC2, KC3 \
+ ) \
+ { \
+     { KA1, KA2, KA3 }, \
+     { KB1, KB2, KB3 }, \
+     { KC1, KC2, KC3 } \
+ }