POPPY-0033: Research automatic code writing for core elements

There are some boilerplate codes in core elements. How could be those code fragments generated automatically?

Use some kind of annotation? Write .moc.h files with those annotation and convert them automatically to the real .h files as the first step of compiling.

First steps: Please check the attached codes.

Start by inspecting the attached code fragments and identifying which boilerplate is repeated across the core elements. Then review the current build entry points and header-generation steps, if any; the work is done when a concrete, documented generation approach and its scope are established.

Written by the indexing model from the issue text.