[link device] update docs

Need to define architecture and update the documentation for the new P2P (WIP) mechanism.

changed due date to December 31, 2024

added security sprintin progress labels

assigned to @kdupont-teevin and @aberaud

marked this issue as related to jami-daemon#930

changed title from LinkDevice: Update Docs to [link device] update docs

added to epic &71

added severitymedium label

added documentation label

added typerefactor label

marked this issue as related to jami-client-qt#1695