Add nullbits nibble (#9250)

* Add NIBBLE keyboard

* Update VID for VIA compatibility

* Add QMK PR feedback

* Update matrix_init_remote_kb()

* Update with requested changes

Clean up config, makefile rules, and keymap files

* Update with changes for unified ANSI/ISO layout

* Add NO_USB_STARTUP_CHECK note in readme

* Add license info, update with PR changes

-Refactor encoder, via_extras code
-Refactor VIA specific code to live in keymap folder
-Remove non-inclusive naming in remote keyboard.c/h
-Add documentation to remote_keyboard.c
-Add compiler check for vusb_detect for non-avr micros

* Fix print formatter in encoder handler

Co-authored-by: Nick Brassel <nick@tzarc.org>

* Small PR updates

-Remove unneded matrix code from nibble.c
-Clean up include code in nibble_encoder.h

* Update Big LED headerfile

-Declare Big LED functions in header file (derp)

* Update keyboards/nullbitsco/nibble/nibble.c

-Update with drashna's suggested CAPS LED code change

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Update keyboards/nullbitsco/nibble/rules.mk

-Update with drasha's suggested makefile formatting changes

Co-authored-by: Drashna Jaelre <drashna@live.com>

* Fix caps_lock typo

Co-authored-by: Nick Brassel <nick@tzarc.org>
Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/nullbitsco/nibble/keymaps/via/nibble_encoder.h

@@ -0,0 +1,50 @@
+/* Copyright 2020 Jay Greco
+ *
+ * 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 QMK_KEYBOARD_H
+#include "eeprom.h"
+
+#define EEPROM_ENABLED_ENCODER_MODES (VIA_EEPROM_CUSTOM_CONFIG_ADDR)
+#define EEPROM_CUSTOM_ENCODER (VIA_EEPROM_CUSTOM_CONFIG_ADDR+1)
+
+enum encoder_modes {
+  ENC_MODE_VOLUME,
+  ENC_MODE_MEDIA,
+  ENC_MODE_SCROLL,
+  ENC_MODE_BRIGHTNESS,
+  ENC_MODE_BACKLIGHT,
+  ENC_MODE_CUSTOM0,
+  ENC_MODE_CUSTOM1,
+  ENC_MODE_CUSTOM2,
+  _NUM_ENCODER_MODES,
+};
+
+enum custom_encoder_behavior {
+    ENC_CUSTOM_CW = 0,
+    ENC_CUSTOM_CCW,
+    ENC_CUSTOM_PRESS
+};
+
+uint16_t 
+  retrieve_custom_encoder_config(uint8_t encoder_idx, uint8_t behavior),
+  handle_encoder_cw(void),
+  handle_encoder_ccw(void);
+
+void set_custom_encoder_config(uint8_t encoder_idx, uint8_t behavior, uint16_t new_code),
+  pre_encoder_mode_change(void),
+  post_encoder_mode_change(void),
+  change_encoder_mode(bool clockwise);