Migrate features and LTO from rules.mk to data driven (#23302)

keyboards/smithrune/iron180/keyboard.json

@@ -8,6 +8,14 @@
         "pid": "0x1180",
         "device_version": "0.0.1"
     },
+    "features": {
+        "bootmagic": true,
+        "command": true,
+        "console": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
     "matrix_pins": {
         "cols": ["B7", "B6", "B5", "B4", "B3", "A10", "A9", "A8", "B15", "B14", "B13", "B12", "B11", "B2", "A4", "B1", "A3"],
         "rows": ["B9", "B8", "A15", "B0", "A7", "A5"]

keyboards/smithrune/iron180/rules.mk

@@ -1,15 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = yes       # Mouse keys
-EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = yes        # Console for debug
-COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE = yes           # USB Nkey Rollover
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-ENCODER_ENABLE = no
-LTO_ENABLE = no
-