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

keyboards/ein_60/keyboard.json

@@ -36,6 +36,16 @@
             "twinkle": true
         }
     },
+    "features": {
+        "bootmagic": true,
+        "command": true,
+        "console": true,
+        "encoder": true,
+        "extrakey": true,
+        "mousekey": false,
+        "nkro": false,
+        "oled": true
+    },
     "matrix_pins": {
         "cols": ["A3", "A2", "A1", "A0", "F6", "F5", "F0", "E0", "E1", "C0", "C1", "C2", "C3"],
         "rows": ["F1", "F2", "F3", "F4"]

keyboards/ein_60/rules.mk

@@ -1,15 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no        # 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 = no            # 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 = no      # Enable for pretty RGB matrix effects
-ENCODER_ENABLE = yes        # Enables the use of one or more encoders
-OLED_ENABLE = yes           # Enables the use of OLED displays