Remove SQLite in favor of DuckDB

[alexanderdean]

From @miike:

Currently they both run in parallel - though the DuckDB interface is significantly easier to query (as it shreds) rather than SQLite which just does rather naive inserts.

I have considered removing SQLite entirely as the event debugger itself doesn't require a persistent store at all and DuckDB provides the more idiomatic interface that also allows for running the data models.

I think it would make sense to remove SQLite as it's not a OLAP-grade data store.