[Keyboard] Add Binpad BN009 R2 3x3 macropad (#19992)

Co-authored-by: Less/Rikki <86894501+lesshonor@users.noreply.github.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>

keyboards/binepad/bn009r2/keymaps/default/keymap.json

@@ -0,0 +1,15 @@
+{
+    "keyboard": "binepad/bn009r2",
+    "version": 1,
+    "author": "binepad",
+    "notes": "This file is a keymap.json file for binepad/bn009r2",
+    "keymap": "default",
+    "layout": "LAYOUT_ortho_3x3",
+    "layers": [
+        [
+            "KC_7", "KC_8", "KC_9",
+            "KC_4", "KC_5", "KC_6",
+            "KC_1", "KC_2", "KC_3"
+        ]
+    ]
+}