In this commit, the ForEachSourceNodeChannel implementation of the
SQLStore is added. Since this is the first method of the SQLStore that
fetches channel and policy info, it also adds all the helpers that are
required to do so. These will be re-used in upcoming commits as more
"For"-type methods are added.
With this implementation, we convert the `TestForEachSourceNodeChannel`
such that it is run against SQL backends.
This commit adds incoming and outgoing channel ids filter to forwarding history request to filter events received/forwarded from/to a particular channel
In this commit, we check that the extra bytes appended to gossip
messages contain valid TLV streams. We do this here for:
- channel_announcement
- channel_announcement_2
- channel_update
- channel_update_2
- node_announcement
This is in preparation for the SQL version of the graph store which will
normalise TLV streams at persistence time.
In this commit, we introduce the `V1Store` interface which the existing
`graphdb.KVStore` implements today. The idea is to eventually create a
SQL DB backed implementation of this interface.
