graph/db: add VersionedGraph MarkEdgeZombie and MarkEdgeLive wrappers

Add MarkEdgeZombie and MarkEdgeLive convenience methods to
VersionedGraph that supply the gossip version from the embedded
field, matching the pattern used by other VersionedGraph wrappers.

Author: ellemouton

graph/db/graph.go

@@ -1051,6 +1051,23 @@ func (c *VersionedGraph) DeleteChannelEdges(ctx context.Context,
 	)
 }
 
+// MarkEdgeZombie marks a channel as a zombie for this version.
+func (c *VersionedGraph) MarkEdgeZombie(ctx context.Context, chanID uint64,
+	pubKey1, pubKey2 [33]byte) error {
+
+	return c.ChannelGraph.MarkEdgeZombie(
+		ctx, c.v, chanID, pubKey1, pubKey2,
+	)
+}
+
+// MarkEdgeLive clears an edge from our zombie index for this version, deeming
+// it as live.
+func (c *VersionedGraph) MarkEdgeLive(ctx context.Context,
+	chanID uint64) error {
+
+	return c.ChannelGraph.MarkEdgeLive(ctx, c.v, chanID)
+}
+
 // HasChannelEdge returns true if the database knows of a channel edge with the
 // passed channel ID and this graph's gossip version, and false otherwise. If it
 // is not found, then the zombie index is checked and its result is returned as