Part 3 of the migration.

Part 2 here: https://github.com/actualbudget/actual/pull/1419

Upgrading `Downshift` dependency

Seems to build fine, will test later.

Working on #583

*  (prettier) adding trailing commas

* More commas

*   upgrade eslint-plugin-import and fix issues

* Change import ordering

* style: enforce sorting of imports

* style: alphabetize imports

* style: merge duplicated imports

* style: enforce ordering of imports

* style: sort imports in loot-core

* style: sort imports in desktop-client

* style: sort imports in loot-design

* style: manual fixes