Migrate build target markers to keyboard.json - R (#23542)

keyboards/rura66/rev1/keyboard.json

@@ -8,6 +8,17 @@
         "pid": "0x0200",
         "device_version": "0.0.1"
     },
+    "build": {
+        "lto": true
+    },
+    "features": {
+        "bootmagic": false,
+        "extrakey": true,
+        "mousekey": false,
+        "nkro": false,
+        "oled": true,
+        "rgblight": true
+    },
     "rgb_matrix": {
         "driver": "ws2812"
     },

keyboards/rura66/rev1/rules.mk

@@ -1,7 +1 @@
-EXTRAKEY_ENABLE = yes    # Audio control and System control
-RGBLIGHT_ENABLE = yes    # Enable keyboard RGB underglow
-RGB_MATRIX_ENABLE = no
-ENCODER_ENABLE = no
-LTO_ENABLE = yes
-
 SRC += oled_display.c

keyboards/rura66/rules.mk

@@ -1,16 +1 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # 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
-OLED_ENABLE = yes
-LTO_ENABLE = yes
-
 DEFAULT_FOLDER = rura66/rev1