Migrate features from rules.mk to DD (#23202)

keyboards/9key/keyboard.json

@@ -0,0 +1,50 @@
+{
+  "keyboard_name": "9Key",
+  "manufacturer": "Bishop Keyboards",
+  "url": "",
+  "maintainer": "qmk",
+  "usb": {
+    "vid": "0xFEED",
+    "pid": "0x0007",
+    "device_version": "0.0.1"
+  },
+  "rgblight": {
+    "led_count": 1
+  },
+  "ws2812": {
+    "pin": "F7"
+  },
+  "features": {
+    "bootmagic": false,
+    "command": false,
+    "console": false,
+    "extrakey": true,
+    "mousekey": true,
+    "nkro": true,
+    "unicode": true
+  },
+  "matrix_pins": {
+    "cols": ["F4", "F5", "F6"],
+    "rows": ["D1", "D0", "D4"]
+  },
+  "diode_direction": "COL2ROW",
+  "processor": "atmega32u4",
+  "bootloader": "caterina",
+  "layouts": {
+    "LAYOUT": {
+      "layout": [
+        {"matrix": [0, 0], "x": 0, "y": 0},
+        {"matrix": [0, 1], "x": 1, "y": 0},
+        {"matrix": [0, 2], "x": 2, "y": 0},
+
+        {"matrix": [1, 0], "x": 0, "y": 1},
+        {"matrix": [1, 1], "x": 1, "y": 1},
+        {"matrix": [1, 2], "x": 2, "y": 1},
+
+        {"matrix": [2, 0], "x": 0, "y": 2},
+        {"matrix": [2, 1], "x": 1, "y": 2},
+        {"matrix": [2, 2], "x": 2, "y": 2}
+      ]
+    }
+  }
+}