Pocket-to-sqlite

- Progress bar now includes a count of the total number of items to fetch.
- Now packaged using `pyproject.toml`. [12](https://github.com/dogsheep/pocket-to-sqlite/issues/12)

- `-a` is now the shortcut for `--auth` - previously it was duplicated as a shortcut for `--all`. Thanks, [Thomas Lockney](https://github.com/tlockney). [#7](https://github.com/dogsheep/pocket-to-sqlite/issues/7)
- `pocket-to-sqlite auth` command now updates the existing `auth.json` file rather than over-writing it. [10](https://github.com/dogsheep/pocket-to-sqlite/issues/10)

- Tweaked dependencies for compatibility with new PyPI resolver.

* Defaults to only retrieving updated items, unless you use `--all`. 2
* Now displays a progress bar for initial data import and `--all`.
* Data is now fetched 500 items at a time using API pagination. 1
* Now depends on `sqlite-utils 2.x`.
* `auth.json` now uses `pocket_` prefix on each stored key. 4

Initial release