🔧 JsonConfig: add missing brightness properties

doc/json_schema.json

@@ -1003,6 +1003,21 @@
                                         "minimum": 0,
                                         "maximum": 400,
                                         "default": 10
+                                    },
+                                    "key": {
+                                        "$ref": "#/$defs/key"
+                                    },
+                                    "keyColor": {
+                                        "$ref": "#/$defs/keyColor"
+                                    },
+                                    "outputColor": {
+                                        "$ref": "#/$defs/outputColor"
+                                    },
+                                    "keyWidth": {
+                                        "$ref": "#/$defs/keyWidth"
+                                    },
+                                    "format": {
+                                        "$ref": "#/$defs/format"
                                     }
                                 }
                             },