Migrate features from rules.mk to data driven - EFGH (#23248)

keyboards/gizmo_engineering/gk6/keyboard.json

@@ -27,6 +27,15 @@
         "react_on_keyup": true,
         "sleep": true
     },
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": false,
+        "nkro": false,
+        "rgb_matrix": true
+    },
     "matrix_pins": {
         "cols": ["B5", "C6", "C7", "F7", "F6", "D5", "D3", "D2", "F1", "F4", "B7", "F5"],
         "rows": ["B6", "B4", "D7", "D6", "D4"]

keyboards/gizmo_engineering/gk6/rules.mk

@@ -1,14 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # 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
-
-RGB_MATRIX_ENABLE = yes