Update magic_schema.json to have complete visualization object

[tyeth]

Updates magic board schema to include full visualisation object from components repo.

https://github.com/adafruit/Wippersnapper_Components/blob/1f7823e15ee49acffb15aab2cc947ea7d1ad6619/components/pin/schema.json#L84-L111

  "visualization": {
      "description": "Specifies which visual component to use in the WipperSnapper interface and how to configure it",
      "type": "object",
      "discriminator": { "propertyName": "type" },
      "required": ["type"],
      "oneOf": [{
        "properties": {
          "type": { "const": "switch" },
          "offLabel": { "type": "string" },
          "offIcon": { "type": "string" },
          "onLabel": { "type": "string" },
          "onIcon": { "type": "string" }
        },
        "additionalProperties": false
      }, {
        "properties": {
          "type": { "const": "button" },
          "pressedLabel": { "type": "string" },
          "unpressedLabel": { "type": "string" }
        },
        "additionalProperties": false
      }, {
        "properties": {
          "type": { "const": "slider" }
        },
        "additionalProperties": false
      }]
    }

Slightly concerned that the exported did not include the visualisation.type which is in theory mandatory. The magic config import also worked fine without it.

Wippersnapper_Boards/boards/magtag/magic.json

Lines 76 to 80 in 5ee7dc9

	"visualization": {
	"offLabel": "Enabled",
	"onLabel": "Disabled",
	"offIcon": "fa6:regular:plug-circle-bolt",
	"onIcon": "fa6:solid:plug-circle-xmark"

[tyeth]

After discussion I now see that type is not required for magic config, but is for component repo.