Create spaces (#5982)

* 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>

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/components/avatar/AvatarSize.kt

@@ -46,7 +46,7 @@ enum class AvatarSize(val dp: Dp) {
     RoomInviteItem(52.dp),
     InviteSender(16.dp),
 
-    EditRoomDetails(70.dp),
+    EditRoomDetails(68.dp),
     RoomListManageUser(96.dp),
 
     NotificationsOptIn(32.dp),