[FEATURE] Database Backing for Archive

[BlipRanger]

Describe the solution you'd like
Consider using something like a SQLite db backing for fast recreation of archive.

Additional context
This would open our options in terms of storing other archived info like recovered comments/post.
Might have some drawbacks though. Something to think about.

[stanleyshly]

Quite late, but something like timesearch does write to a sql db.