Room's details edit screen (#956)

* Add RoomDetailsEditScreen template

* Add navigation to the edit screen

* Delete template code

* Start RoomDetailsEditScreen UI

* Manage power levels in RoomDetailsScreen

* Start RoomDetailsEditScreenViewModel logic

* Inject initial room state

* Add cancel action

* Expose set name/topic APIs in RoomProxy

* Refine RoomDetailsEditScreen UI

* Add save logic

* Add localisations

* Fix avatar image

* Update localisations

* Add “Add topic” button

* Add feature flag

* Add dismiss on save logic

* Reduce throttling

* Improve form logic

* Fix UT build errors

* Add media sheet

* Add media preprocessing

* Add LoadableEditableAvatarImage

* Add condition on delete image

* Add avatar save button logic

* Add remove avatar logic

* Cleanup

* Fix edit bug in DM

* Add upload avatar

* Add focus

* Add RoomDetailsViewModel UTs

* Fix button style

* Add UTs

* Add empty topic ui test

* Fix iPad sheet presentation

* Revert topic appearance in room’s details

* Address PR comments

* Add UI tests

ElementX/Sources/UITests/UITestsScreenIdentifier.swift

@@ -43,8 +43,11 @@ enum UITestsScreenIdentifier: String {
     case userSessionScreen
     case roomDetailsScreen
     case roomDetailsScreenWithRoomAvatar
+    case roomDetailsScreenWithEmptyTopic
     case roomDetailsScreenWithInvite
     case roomDetailsScreenDmDetails
+    case roomEditDetails
+    case roomEditDetailsReadOnly
     case roomMembersListScreen
     case roomMembersListScreenPendingInvites
     case roomMemberDetailsAccountOwner