[Keyboard] Add ANAVI Arrows (#22454)

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

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

@@ -0,0 +1,20 @@
+// Copyright 2023 Leon Anavi <leon@anavi.org>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+enum layer_names {
+    _BASE
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_BASE] = LAYOUT(
+                           KC_MUTE,
+                  KC_UP,
+        KC_RIGHT, KC_DOWN, KC_LEFT)
+};
+
+const uint16_t PROGMEM backlight_combo[] = {KC_UP, KC_DOWN, COMBO_END};
+combo_t key_combos[] = {
+    COMBO(backlight_combo, BL_STEP)
+};