Migrate build target markers to keyboard.json - TUV (#23514)

keyboards/uzu42/rev1/keyboard.json

@@ -8,6 +8,13 @@
     "pid": "0x3060",
     "device_version": "0.0.1"
   },
+  "features": {
+    "bootmagic": false,
+    "extrakey": false,
+    "mousekey": false,
+    "nkro": false,
+    "rgblight": true
+  },
   "matrix_pins": {
     "cols": ["F4", "F5", "F6", "F7", "B1", "B3"],
     "rows": ["D4", "C6", "D7", "E6"]

keyboards/uzu42/rev1/rules.mk

@@ -1 +0,0 @@
-RGBLIGHT_ENABLE = yes

keyboards/uzu42/rules.mk

@@ -1,15 +1 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no       # Mouse keys
-EXTRAKEY_ENABLE = no       # 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
-AUDIO_ENABLE = no           # Audio output
-RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.
-OLED_ENABLE = no      # OLED display
-
 DEFAULT_FOLDER = uzu42/rev1