Add block_constructor macro to AreaHandler and TableModelHandler classes

Author: kojix2

src/uing/area/area_handler.cr

@@ -1,5 +1,7 @@
 module UIng
   class AreaHandler
+    block_constructor
+    
     def initialize(@cstruct : LibUI::AreaHandler = LibUI::AreaHandler.new)
     end
 

src/uing/control.cr

@@ -1,4 +1,18 @@
 module UIng
+  macro block_constructor
+    def self.new(*args, &block)
+      instance = new(*args)
+      with instance yield
+      instance
+    end
+
+    def self.new(*args, **kwargs, &block)
+      instance = new(*args, **kwargs)
+      with instance yield
+      instance
+    end
+  end
+
   module MethodMissing
     # Dynamic method generation macro that automatically creates wrapper methods
     # for libui C API functions based on the calling class and method name.
@@ -34,20 +48,6 @@ module UIng
       end
       {% end %}
     end
-
-    macro block_constructor
-      def self.new(*args, &block)
-        instance = new(*args)
-        with instance yield
-        instance
-      end
-
-      def self.new(*args, **kwargs, &block)
-        instance = new(*args, **kwargs)
-        with instance yield
-        instance
-      end
-    end
   end
 
   module Control

src/uing/table/table_model_handler.cr

@@ -1,5 +1,7 @@
 module UIng
   class TableModelHandler
+    block_constructor
+
     def initialize(@cstruct : LibUI::TableModelHandler = LibUI::TableModelHandler.new)
     end