Add Zeropad (#24737)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Joel Challis <git@zvecr.com>

keyboards/handwired/zeropad/keymaps/default/keymap.c

@@ -0,0 +1,13 @@
+// Copyright 2023 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [0] = LAYOUT_ortho_3x3(
+        KC_1,   KC_2,   KC_3,
+        KC_4,   KC_5,   KC_6, 
+        KC_7,   KC_8,   KC_9
+    )
+};