[feature idea] Integrate C4 module

[cfrancois7]

More developper use C4 model to represent their solution and communicate with the stackholders.
see https://c4model.com/

Even if it could be translated into TOGAF model with one or several view (cf. C4 model with Archimatetool, it could be interested to develop a special module to make easy to navigation between the C- level.

Best regards,
PS : thanks for your work and your great tool.