improve recreateChain

[dakkar]

• it no longer cares about the order of the notes in the input array, it will always match parent and children
• a single function can process notes and tweets, because it takes the id + replyid field names as arguments
• the same function should be usable for other importers, too

I had to pick a single field name between replies and childNotes, I picked childNotes and updated the tweet import job code to match.

This code imported correctly my Twitter export: and my Sharkey export:

Checklist

• [x] Read the contribution guide
• [x] Test working in a local environment
• [ ] (If needed) Add story of storybook
• [ ] (If needed) Update CHANGELOG.md
• [ ] (If possible) Add tests