refs https://github.com/TryGhost/Team/issues/2110
- dynamically defined properties on the config service did not have
autotracking set up properly if they were accessed in any way before the
property was defined, this caused problems in a number of areas because
we have both "unauthed" and "authed" sets of config and when not logged
in we had parts of the app checking for authed config properties that
don't exist until after sign-in and subsequent config re-fetch
- renamed `config` service to `configManager` and updated to only
contain methods for fetching config data
- added a `config` instance initializer that sets up a `TrackedObject`
instance with some custom properties/methods and registers it on
`config:main`
- uses application instance initializer rather than a standard
initializer because standard initializers are only called once when
setting up the test suite so we'd end up with config leaking across
tests
- added an `@inject` decorator that when used takes the property name
and injects whatever is registered at `${propertyName}:main`, this
allows us to use dependency injection for any object rather than just
services or controllers
- using `application.inject()` in the initializer was initially used but
that only works for objects that extend from `EmberObject`, the
injections weren't available in native-class glimmer components so this
decorator keeps the injection syntax consistent
- swapped all `@service config` uses to `@inject config`
refs https://github.com/TryGhost/Team/issues/1441
- switched "leave settings" confirmation modal on members email settings screen over to modern modal pattern
- removed unused `showEmailDesignSettings` property and `closeEmailDesignSettings()` action on `<Settings::MembersEmailLabs>` component
- the used property and action live on the controller, looks like it was a copy/paste hangover when functionality was moved to a component
- added newsletter model
- includes design-related attributes which are not yet supported by the API but are due to be added
- includes `default` attribute but there is no setting for it, due to be removed from the API but it's needed for save not to error for now
- set up basic mirage model and endpoints
- added validation for main settings to match API validation
- added `EditNewsletter` modal
- separate tabs for general newsletter settings and design-related settings
- used for both creating and editing newsletters
- added `/settings/members-email/newsletters/new` and `/settings/members-email/newsletters/:id` routes
- both display the `EditNewsletter` modal on top of the members-email settings screen with the appropriate newsletter model
- updated `<Settings::MembersEmailLabs::NewsletterManagement>` component to work with real newsletter model instances and the new add/edit routes
- removed now-unused `newsletter` service that was providing mocked data for earlier design iteration
no issue
- moved duplicated email domain generation from `members-email` controller and `<GhMembersEmailSetting>` to `config.emailDomain`
- added `{{from-email-address emailStr}}` helper that will output the passed in emailStr value if it contains an `@` or concat `emailStr@emailDomain` if it doesn't - lets us use `settings.membersFromAddress` to always get a full email address when it could be just a name (`noreply`) or a full address
- updated customise email and post email preview templates to use the new helper
