Miscellaneous keyboard.json migrations (#23486)

keyboards/melgeek/mj64/rev1/keyboard.json

@@ -1,4 +1,13 @@
 {
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true,
+        "rgb_matrix": true
+    },
     "matrix_pins": {
         "cols": ["B15", "A8", "A10", "A15", "B3", "B4", "B5", "B8", "B9", "C13", "C14", "C15", "A0", "A1"],
         "rows": ["B12", "B11", "B10", "B1", "A3"]

keyboards/melgeek/mj64/rev1/rules.mk

@@ -1,12 +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 = yes           # Enable N-Key Rollover
-BACKLIGHT_ENABLE = no          # Enable keyboard backlight functionality
-RGBLIGHT_ENABLE = no           # Enable keyboard RGB underglow
-RGB_MATRIX_ENABLE = yes        # Use RGB matrix