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

keyboards/deng/djam/keyboard.json

@@ -18,6 +18,16 @@
         },
         "driver": "ws2812"
     },
+    "features": {
+        "backlight": true,
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": false,
+        "nkro": true,
+        "rgb_matrix": true
+    },
     "matrix_pins": {
         "cols": ["C7", "C6", "B6", "B5", "B4", "D7", "D6", "D4"],
         "rows": ["F0", "F1", "F4"]

keyboards/deng/djam/rules.mk

@@ -1,13 +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 = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = yes      # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-RGB_MATRIX_ENABLE = yes