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

keyboards/ada/ada1800mini/keyboard.json

@@ -30,6 +30,15 @@
             "twinkle": true
         }
     },
+    "features": {
+        "bootmagic": true,
+        "command": true,
+        "console": true,
+        "extrakey": false,
+        "mousekey": false,
+        "nkro": false,
+        "rgblight": true
+    },
     "matrix_pins": {
         "cols": ["F1", "F4", "F5", "F6", "F7", "C7", "C6", "B6", "B5", "B4", "D7", "D6", "B3", "B2", "B1"],
         "rows": ["D0", "D1", "D2", "D3", "D5"]

keyboards/ada/ada1800mini/rules.mk

@@ -1,16 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no        # Mouse keys
-EXTRAKEY_ENABLE = no        # Audio control and System control
-CONSOLE_ENABLE = yes        # Console for debug
-COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE = no            # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-
-
-# generated by KBFirmware JSON to QMK Parser
-# https://noroadsleft.github.io/kbf_qmk_converter/