Feature Request: Add "control" Preference Type

[Eric Bixby]

I'm porting a Firefox Add-on over to WebExtensions. The legacy add-on has a preference that is a button that brings that user to a different page to set that particular setting.

Reference:
https://developer.mozilla.org/en-US/Add-ons/SDK/High-Level_APIs/simple-prefs:

Example:
{
"type": "control",
"label": "Click me!",
"name": "sayHello",
"title": "Say Hello"
}

I know I could just add the button to the button of the options page, but it would be nice to have the button included in the list of preferences like it was using the Moziliia API.

[Eric Bixby]

I no longer need this.