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

keyboards/gmmk/gmmk2/p65/ansi/keyboard.json

@@ -11,6 +11,15 @@
     "qmk": {
         "tap_keycode_delay": 10
     },
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true,
+        "rgb_matrix": true
+    },
     "matrix_pins": {
         "cols": ["A0", "A1", "A2", "A3", "A4", "A8", "A9", "A10"],
         "rows": ["B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", "B8"]

keyboards/gmmk/gmmk2/p65/ansi/rules.mk

@@ -1,13 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes       # Enable Bootmagic Lite.
-MOUSEKEY_ENABLE = yes        # 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 = yes            # Enable NKRO Rollover.
-BACKLIGHT_ENABLE = no        # Enable keyboard backlight functionality.
-RGBLIGHT_ENABLE = no         # Enable keyboard RGB underglow.
-AUDIO_ENABLE = no            # Audio output.
-RGB_MATRIX_ENABLE = yes      # Enable RGB matrix effects.