Migrate features from rules.mk to data driven - EFGH (#23248)

keyboards/handwired/swiftrax/walter/keyboard.json

@@ -26,6 +26,16 @@
     "ws2812": {
         "pin": "E6"
     },
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "encoder": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": false,
+        "rgblight": true
+    },
     "matrix_pins": {
         "cols": ["F5", "C6", "F6", "F7", "C7", "B6", "B5", "B4", "D7", "D6", "D4", "D5", "D3", "D2", "D1", "D0"],
         "rows": ["B2", "B1", "F4", "F1", "F0"]

keyboards/handwired/swiftrax/walter/rules.mk

@@ -1,13 +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 = 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 = yes       # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-ENCODER_ENABLE = yes        # Rotary Encder