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

keyboards/gboards/butterstick/keyboard.json

@@ -9,6 +9,17 @@
         "device_version": "0.0.1",
         "force_nkro": true
     },
+    "build": {
+        "lto": true
+    },
+    "features": {
+        "bootmagic": false,
+        "command": false,
+        "console": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
     "matrix_pins": {
         "cols": ["B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", "C6", "C7"],
         "rows": ["F4", "F5"]

keyboards/gboards/butterstick/rules.mk

@@ -1,9 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-MOUSEKEY_ENABLE 	= yes		# Mouse keys
-EXTRAKEY_ENABLE 	= yes       # Audio control and System control
-CONSOLE_ENABLE 		= yes       # Console for debug
-COMMAND_ENABLE 		= no		# Commands for debug and configuration
-NKRO_ENABLE = yes           # Enable N-Key Rollover
-LTO_ENABLE = yes