Migrate features from rules.mk to DD (#23247)

keyboards/bthlabs/geekpad/keyboard.json

@@ -8,6 +8,14 @@
     "pid": "0x4257",
     "device_version": "0.0.1"
   },
+  "features": {
+    "bootmagic": false,
+    "command": false,
+    "console": false,
+    "extrakey": true,
+    "mousekey": false,
+    "nkro": false
+  },
   "matrix_pins": {
     "cols": ["D4", "D0", "D1"],
     "rows": ["F4", "F5", "F6"]

keyboards/bthlabs/geekpad/rules.mk

@@ -1,12 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no       # Mouse keys
-EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = no        # Console for debug
-COMMAND_ENABLE = no        # Commands for debug and configuration
-NKRO_ENABLE = no            # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output