Add TX Bolt protocol support for Stenography

Requires virtser; Allows QMK to speak the TX BOlt protocol used by stenography machines and software (such as Plover). The upside is that Plover can be configured to listen only to TX Bolt allow the keyboard to switch layers without need to enable/disable the Plover software, or to have a second non-Steno keyboard work concurrently.

quantum/keymap_extras/keymap_steno.h

@@ -0,0 +1,71 @@
+/* Copyright 2017 Joseph Wasson
+ *
+ * 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/>.
+ */
+#ifndef KEYMAP_STENO_H
+#define KEYMAP_STENO_H
+
+#include "keymap.h"
+
+enum steno_keycodes {
+  STN_FN  = QK_STENO,
+  STN_NUM,
+  STN_N1 = STN_NUM,
+  STN_N2,
+  STN_N3,
+  STN_N4,
+  STN_N5,
+  STN_N6,
+  STN_SL,
+  STN_S1 = STN_SL,
+  STN_S2,
+  STN_TL,
+  STN_KL,
+  STN_PL,
+  STN_WL,
+  STN_HL,
+  STN_RL,
+  STN_A,
+  STN_O,
+  STN_STR,
+  STN_ST1 = STN_STR,
+  STN_ST2,
+  STN_RES1,
+  STN_RE1 = STN_RES1,
+  STN_RES2,
+  STN_RE2 = STN_RES2,
+  STN_PWR,
+  STN_ST3,
+  STN_ST4,
+  STN_E,
+  STN_U,
+  STN_FR,
+  STN_RR,
+  STN_PR,
+  STN_BR,
+  STN_LR,
+  STN_GR,
+  STN_TR,
+  STN_SR,
+  STN_DR,
+  STN_N7,
+  STN_N8,
+  STN_N9,
+  STN_NA,
+  STN_NB,
+  STN_NC,
+  STN_ZR
+};
+
+#endif