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/via_extras.c

@@ -0,0 +1,129 @@
+/* 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/>.
+ */
+
+#include "via_extras.h"
+
+// Encoder Behavior
+extern uint8_t encoder_value;
+extern uint8_t encoder_mode;
+extern uint8_t enabled_encoder_modes;
+
+void raw_hid_receive_kb( uint8_t *data, uint8_t length )
+{
+  uint8_t *command_id = &(data[0]);
+  uint8_t *command_data = &(data[1]);
+  dprintf("raw hid recv! command_id: %u\n",*command_id);
+  switch ( *command_id )
+  {
+    case id_get_keyboard_value:
+    {
+      switch( command_data[0])
+      {
+        case id_encoder_modes:
+        {
+          command_data[1] = enabled_encoder_modes;
+          dprintf("[read] enabled_encoder_modes: %u\n", enabled_encoder_modes);
+        }
+        break;
+
+        case id_encoder_custom:
+        {
+          uint8_t custom_encoder_idx = command_data[1];
+          uint16_t keycode = retrieve_custom_encoder_config(custom_encoder_idx, ENC_CUSTOM_CW);
+          command_data[2] =  keycode >> 8;
+          command_data[3] = keycode & 0xFF;
+          keycode = retrieve_custom_encoder_config(custom_encoder_idx, ENC_CUSTOM_CCW);
+          command_data[4] =  keycode >> 8;
+          command_data[5] = keycode & 0xFF;
+          keycode = retrieve_custom_encoder_config(custom_encoder_idx, ENC_CUSTOM_PRESS);
+          command_data[6] =  keycode >> 8;
+          command_data[7] = keycode & 0xFF;
+        }
+        break;
+
+        default:
+        {
+          *command_id = id_unhandled;
+        }
+        break;
+      }
+    }
+    break;
+    case id_set_keyboard_value:
+    {
+      switch(command_data[0]){
+        case id_encoder_modes:
+        {
+          enabled_encoder_modes = command_data[1];
+          dprintf("[write] enabled_encoder_modes: %u\n", enabled_encoder_modes);
+          eeprom_update_byte((uint8_t*)EEPROM_ENABLED_ENCODER_MODES, enabled_encoder_modes);
+        }
+        break;
+
+        case id_encoder_custom:
+        {
+          uint8_t custom_encoder_idx = command_data[1];
+          uint8_t encoder_behavior = command_data[2];
+          uint16_t keycode = (command_data[3] << 8) | command_data[4];
+          set_custom_encoder_config(custom_encoder_idx, encoder_behavior, keycode);
+        }
+        break;
+
+        default:
+        {
+          *command_id = id_unhandled;
+        }
+        break;
+      }
+    }
+    break;
+
+    default:
+    {
+      // Unhandled message.
+      *command_id = id_unhandled;
+    }
+    break;
+  }
+}
+
+void encoder_update_kb(uint8_t index, bool clockwise) {
+  if (layer_state_is(1)) {
+    change_encoder_mode(clockwise);
+    return;
+  }
+  uint16_t mapped_code = 0;
+  if (clockwise) {
+    mapped_code = handle_encoder_cw();
+  } else {
+    mapped_code = handle_encoder_ccw();
+  }
+  if(mapped_code != 0){
+    tap_code16(mapped_code);
+  }
+}
+
+void custom_config_load(void){
+#ifdef DYNAMIC_KEYMAP_ENABLE
+  enabled_encoder_modes = eeprom_read_byte((uint8_t*)EEPROM_ENABLED_ENCODER_MODES);
+#endif
+}
+
+void via_init_kb(void)
+{
+  dprintf("VIA is enabled.\n");
+  custom_config_load();
+}