Changelog for `@signaldb/generic-fs`

Switched to new StorageAdapter API.
A collection is a folder now, not a file. The driver is given a directory and writes one file per document under items/ and one file per indexed value under index/, so a write costs one file rather than a rewrite of the whole collection. A driver written against the previous single-file interface has to be rewritten against Driver, which now describes path building, directory creation and recursive listing alongside reading and writing.
Removed compatibility with @signaldb/core versions below 2.0.0

Custom deserialize function now works correctly when file is empty (thanks to @krolebord!)

[1.0.1] - 2025-04-24