[Keyboard] keebwerk. nano. slider support (#7914)

* Initial Keeb.werk nano.slider support

* fixed open ifdef

* Fixed layout macros

* Added LTO

* Enabled LTO and dissabled console

* Added basic slider example

* rate limited adc, and fixed send_string

* Made slider courser

* new-line after each slider print

* Switched slider example mirror the stock behavior using midi

* switched division to bit-shifting

* Apply suggestions from code review

* Update keyboards/keebwerk/nano_slider/keymaps/default/keymap.c

* Update keyboards/keebwerk/nano_slider/config.h

* Update keyboards/keebwerk/nano_slider/config.h

* Applied suggestions from code review

* Apply suggestions from code review

* Added fauxparks info.json

* Reverse midi value direction, move to QMKVID

* Update keyboards/keebwerk/nano_slider/config.h

* Update keyboards/keebwerk/nano_slider/config.h

* Update keyboards/keebwerk/nano_slider/keymaps/default/keymap.c

* Apply suggestions from code review

* Update keyboards/keebwerk/nano_slider/rules.mk

* Update keyboards/keebwerk/nano_slider/nano_slider.h

* Update keyboards/keebwerk/nano_slider/readme.md

* Defined backlight pin and settings

keyboards/keebwerk/nano_slider/nano_slider.c

@@ -0,0 +1,18 @@
+/* Copyright 2020 Duckle
+ *
+ * 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/>.
+ */
+
+#include "nano_slider.h"
+