feat(class): add temporary super method during class init

imports/class/shared.lua

@@ -34,7 +34,19 @@ function mixins.new(class, obj)
 
     setmetatable(obj, class)
 
-    if class.init then obj:init() end
+    if class.init then
+        local parent = class
+
+        function obj:super(...)
+            parent = getmetatable(parent)
+            local superInit = parent and parent.init
+
+            if superInit then return superInit(self, ...) end
+        end
+
+        obj:init()
+        obj.super = nil
+    end
 
     return obj
 end