Project export/Project templates: Keep project permissions (feature toggles)

Problem to solve

When exporting a project, we are not exporting a few relevant Project settings right now. There might be others, but I'm particularly interested in keeping the feature toggles listed under "Settings > General > Permissions" (excluding visibility).

Especially with our new project templates, that might be something users expect.

Further details

List of what's included/excluded in our docs

Proposal

Let's export Project permissions as well. Is there a simple way to make this implicit to not have to catch each new toggle we might add in future?

What does success look like, and how can we measure that?

(If no way to measure success, link to an issue that will implement a way to measure this)