* Add an empty state for the space screen if the user can modify its graph. It adds a new 'create room' button that allows you to open the create room screen with some preset values.
* When computing the editable spaces in `ConfigureRoomPresenter`, also set up the initial selected parent space if possible
* Use `Builder` pattern for `CreateRoomEntryPoint`
* Update screenshots
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Co-authored-by: ElementBot <android@element.io>
