Space Settings: Leave Room (#4700)

* Implementation for all navigations inside the space settings aside the left space action

# Conflicts:
#	ElementX/Sources/FlowCoordinators/SpaceSettingsFlowCoordinator.swift

* refactored the leave space view to use its own view model

# Conflicts:
#	ElementX.xcodeproj/project.pbxproj

* implemented the leave space view model also in the settings screen, and corrected some tests

* reusing the details coordinator for the space settings screen

* leave space from settings implemented

* fix project

* minor pr fixes

* code improvements

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