Keymap: xtonhasvim updates (#3768)

* cherrypicking file changes just for updates

* removed unused heat foo

* avoid defining own min/max

* add license

* formatting

users/xtonhasvim/fancylighting.h

@@ -0,0 +1,35 @@
+p /* Copyright 2015-2017 Christon DeWan
+ *
+ * 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 _fancy_lighting_h
+#define _fancy_lighting_h
+#ifdef RGBLIGHT_ENABLE
+
+#include "xtonhasvim.h"
+
+extern uint8_t user_rgb_mode;
+extern LED_TYPE shadowed_led[];
+
+void start_firey_return(void);
+
+#endif //_fancy_lighting_h
+
+enum xtonhasvim_rgbmodes {
+  BREATH_FIRE = 1,
+  FADE_BACK
+};
+
+#endif //RGBLIGHT_ENABLE