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/bitc_led.h

@@ -0,0 +1,29 @@
+/* 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 "quantum.h"
+
+#define LED_ON          2
+#define LED_DIM         1
+#define LED_OFF         0
+
+#define GPIO_STATE_LOW  0
+#define GPIO_STATE_HIGH 1
+
+#define PIN_LED         F0
+
+void set_bitc_LED(uint8_t mode);