Project Settings: Rework Project Settings Dialog with extensible components

[tjcouch-sil]

As a user, I want to be able to adjust project settings that affect how I use Platform.Bible so I can configure it how I like to use it.

As an extension developer, I want to be able to provide project settings that the user can edit in a central dialog so they can configure Platform.Bible how they want, and my extension will adjust accordingly.

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• Rework a Project Settings dialog as a webview so it is sandboxed from main UI
  • Note #434 and #503 made the Settings dialog similarly
• Maybe goes in its own bundled extension? Or find a way to serve this webview from core somehow
• Must accept settings object and components
• Display settings groups and individual settings according to settings JSON
• Provide components for settings created in #714

Depends on #509, #714, see #503 which is very similar and code might be shareable

Builds on pencil sketch in #867

Settings & State Design Doc

[Sebastian-ubs]

For implementation use https://github.com/paranext/paranext-core/issues/621