feat(platform): Add support for FullURN in edge tag

[betimshahini]

To allow enhancing the edge tag with attributes, the tag needs to be enhanced so it supports the full features of a FullURN. To support this, the nodes table in the Edges database would need to be converted/renamed to a more generic urns; same with node_qcomp and node_rcomp into urn_qcomp and urn_rcomp. This way, a foreign constraint could be placed on the tag column in the edges table so that it points to the urns table and inherit the benefit of the FullURN that comes from the comp tables.