Take additional keyValues varargs for SqlgGraph.bulkAddEdges

[jgustie]

When bulk adding edges there is currently no way of adding additional properties to the edge: either during insertion or by updating the edges after insertion.

Accepting a keyValues varargs would not break existing calls, but would allow for assignment of identifying properties (e.g. ["partition","1"] or ["bulkEdge",Boolean.TRUE]) on the entire batch of edges.