Update config.schema.json to make certain properties advanced

[dxdc]

For ex:

• https://github.com/oznu/homebridge-config-ui-x/blob/master/config.schema.json
• https://github.com/NorthernMan54/homebridge-alexa/blob/master/config.schema.json

We can then make a lot of properties "advanced" and configure the correct logic to give users the option to choose certain things.

[slavikme]

I have already wrote something. See this PR #44