[Keyboard] Siemens Tastatur Converter (#6090)

* initial commit

* Siemens Tastatur

* Update keyboards/handwired/siemens_tastatur/keymaps/default/keymap.c

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* beauty fixes

* More tidying up

* Update keyboards/converter/siemens_tastatur/keymaps/default/keymap.c

Co-Authored-By: Drashna Jaelre <drashna@live.com>

keyboards/converter/siemens_tastatur/siemens_tastatur.h

@@ -0,0 +1,41 @@
+/*
+Copyright 2019 Yiancar
+
+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( \
+    k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, k0c, k0d,     k0e, k0f, k0g, k0h, k0i, \
+    k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c,          k1e, k1f, k1g, k1h, k1i, \
+    k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c, k2d,     k2e, k2f, k2g, k2h, k2i, \
+       k30, k31, k32, k33, k34, k35, k36, k37, k38, k39,      k3a,            k3e, k3f, k3g, k3h, k3i, \
+                               k3b                                                                     \
+) \
+{ \
+    { k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0a, k0b, k0c,   k0d,   k0e, k0f, k0g, k0h, k0i }, \
+    { k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1a, k1b, k1c,   KC_NO, k1e, k1f, k1g, k1h, k1i }, \
+    { k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2a, k2b, k2c,   k2d,   k2e, k2f, k2g, k2h, k2i }, \
+    { k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3a, k3b, KC_NO, KC_NO, k3e, k3f, k3g, k3h, k3i }, \
+}