feature(space): add view members entry

features/space/api/src/main/kotlin/io/element/android/features/space/api/SpaceEntryPoint.kt

@@ -33,5 +33,7 @@ interface SpaceEntryPoint : FeatureEntryPoint {
     interface Callback : Plugin {
         fun onOpenRoom(roomId: RoomId, viaParameters: List<String>)
         fun onOpenDetails()
+
+        fun onOpenMemberList()
     }
 }