[Keymap] ANAVI Macro Pad 2 add binary keymap (#13090)

This binary keymap for ANAVI Macro Pad 2 helps with 0 and 1:

left key: 0
right key: 1

Combo press both keys to control the backlit.

Suggested-by: Chris <christopher.walker@crowdsupply.com>
Signed-off-by: Leon Anavi <leon@anavi.org>

keyboards/anavi/macropad2/keymaps/binary/keymap.c

@@ -0,0 +1,30 @@
+/* Copyright 2021 Leon Anavi <leon@anavi.org>
+ *
+ * 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 QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT(
+    KC_0,  KC_1
+  )
+};
+
+const uint16_t PROGMEM test_combo[] = {KC_0, KC_1, COMBO_END};
+combo_t key_combos[COMBO_COUNT] = {COMBO_ACTION(test_combo)};
+
+void process_combo_event(uint16_t combo_index, bool pressed) {
+	backlight_step();
+}

keyboards/anavi/macropad2/keymaps/binary/rules.mk

@@ -0,0 +1 @@
+COMBO_ENABLE = yes