Part 3 of the migration.

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

Introduces a **ResponsiveProvider** as the sole location that tracks
window size and makes that info available to the entire app. This can be
used for media queries and size-based component switching.
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Co-authored-by: Jed Fox <git@jedfox.com>

Seems to build fine, will test later.

*  (prettier) adding trailing commas

* More commas

*   enabling no-unused-vars eslint rule

* fix more lint issues

* Split the Settings component into multiple files (#434)
* Remove need for isMobile in CSS: lean on media queries in styles.js and glamor

Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>
Co-authored-by: Jed Fox <git@jedfox.com>

* 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