In order to give clients more insights about archive messages being
processed, we're adding this additional signal that informs clients when
the import of downloaded history archive messages has started.
This adds a new `DownloadingHistoryArchivesFinished` signal to the
family of community archive signals. It's emitted when all to be
downloaded archives have been downloaded and handled.
This introduces logic needed to:
- Create WakuMessageArchives and and indices from store waku messages
- History archive torrent data to disk and create .torrent file from
that
- Seed and unseed history archive torrents as necessary
- Starting/stopping the torrent client
- Enabling/disabling community history support for individual components
and starting/stopping the routine intervals accordingly
This does not yet handle magnet links (#2568)
Closes#2567
Pascal Precht