* Allow creating a space with `CreateRoomParameters`
* Add 'Create space' menu item in the spaces home screen. Also, imports new strings related to spaces.
* Link the 'Create space' button with the screen to create the space
* Unify room access and visibility for `ConfigureRoom`, use the updated design
* Fix `EditRoomDetails` avatar size (68dp)
* Replace `EditableAvatarView` and `UnsavedAvatar` copmonents with `AvatarPickerView`
* `AvatarDataFetcherFactory`: Make sure we use a fallback image fetcher when the URL is not an MXC one (a local one, i.e.). This removes the previous need for a separate `UnsavedAvatarView`
* Use `AvatarPickerView` in all the screens where `EditableAvatarView` was used
* Improve naming and previews
* Update strings, remove unused ones for `RoomAccessItem`
* Make `isSpace` part of the `CreateRoomConfig`
* Ensure the content fits in the screenshots for `AvatarPickerSizesPreview`
* Add `AvatarDataFetcherFactoryTest`
* Add new feature flag for creating spaces
* Fix ripple being too large for the `Pick` state
* Tweak margins and section titles a bit
* Add preview for `HomeTopBar` with the spaces case
* Update screenshots
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Co-authored-by: ElementBot <android@element.io>
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