keyboards/anavi: Add ANAVI Knob 1 (#18623)

ANAVI Knob 1 is a mini mechanical keyboard with a clickable rotary
encoder, USB-C, RP2040 microcontroller and I2C slot for a display.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

keyboards/anavi/knob1/keymaps/default/keymap.c

@@ -0,0 +1,16 @@
+// Copyright 2022 Leon Anavi <leon@anavi.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+//#include <stdio.h>
+
+enum layer_names {
+    _BASE
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_BASE] = LAYOUT_k1(
+        KC_MUTE
+    )
+};