Component example showing composition of components (#150)

This approach can allow for UI sections that are more modular and reusable

examples/component/CMakeLists.txt

@@ -7,6 +7,7 @@ endfunction(example)
 example(button)
 example(checkbox)
 example(checkbox_in_frame)
+example(composition)
 example(gallery)
 example(homescreen)
 example(input)