Simple extended space cadet (#5277)

* Simplifying and Extending Space Cadet to work on Ctrl and Alt keys

* PR Review feedback

* Reverting back to keycodes

quantum/process_keycode/process_space_cadet.h

@@ -0,0 +1,21 @@
+/* Copyright 2019 Jack Humbert
+ *
+ * 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"
+
+void perform_space_cadet(keyrecord_t *record, uint8_t normalMod, uint8_t tapMod, uint8_t keycode);
+bool process_space_cadet(uint16_t keycode, keyrecord_t *record);