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

keyboards/drewkeys/iskar/keyboard.json

@@ -8,6 +8,17 @@
         "pid": "0x1284",
         "device_version": "0.0.1"
     },
+    "build": {
+        "lto": true
+    },
+    "features": {
+        "bootmagic": false,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
     "matrix_pins": {
         "cols": ["B6", "C6", "C7", "F6", "F5", "F4", "F7", "F1", "F0", "E6", "B7", "D0", "D1", "D2", "D3", "D5"],
         "rows": ["D6", "D7", "B4", "B5", "D4"]

keyboards/drewkeys/iskar/rules.mk

@@ -1,13 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = yes       # 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 = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-LTO_ENABLE = yes