Improve endpoint determination code layer
As part of GVA migration #175 (closed), the network layer has been rewritten. Now, that gva is discontinued, let's apply the network layer improvements to bma.
Gitlab was upgraded to latest version (v18.3.1), please report issues to https://forum.duniter.org/t/interventions-et-indisponibilite-des-forums-et-de-gitlab/7131/298
As part of GVA migration #175 (closed), the network layer has been rewritten. Now, that gva is discontinued, let's apply the network layer improvements to bma.