Migrate build target markers to keyboard.json - OQ (#23564)

keyboards/opendeck/32/rev1/keyboard.json

@@ -1,4 +1,14 @@
 {
+    "build": {
+        "lto": true
+    },
+    "features": {
+        "bootmagic": false,
+        "extrakey": false,
+        "mousekey": false,
+        "nkro": true,
+        "rgb_matrix": true
+    },
     "matrix_pins": {
         "cols": ["B4", "D7", "D6", "D4", "F7", "F6", "F5", "F4"],
         "rows": ["C7", "C6", "B6", "B5"]

keyboards/opendeck/32/rev1/rules.mk

@@ -1,18 +1,2 @@
 # Processor frequency
 F_CPU = 8000000
-
-# 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 = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-RGB_MATRIX_ENABLE = yes
-
-LTO_ENABLE = yes