Feature request: Reverse replication

[code959437957]

We have three Node:

1. The main prod node: hosting the product online database;
2. The backup server: provide SFTP backup for litestream to replicate and backup on to it
3. The testing node: we often check the backup is ok?

The feature request is for the testing node:

we need to replicate data continue from backup server into testing node.
we write script to compare hourly to check if the backup data is ok.

and we also using testing node to run tests with data

[code959437957]

And this also can be use to replicate database to slave db server instance.

[rishi-kulkarni]

+1 This would be useful for data warehousing without having to redownload the entire DB every time.