[Neue] Base (#5395)

* Add fontScale, gate it, fix some computes

* Add inter, integrate

* Clean up

* Apply to old Text component

* Use numeric weight

* Cleanup

* Clean up appearance settings

* Global tracking

* Fix regular italic variant

* Refactor settings and fontScale values

* Remove flags

* Get rid of lower weight font usage

* Remove gate from settings

* Refactor appearance settings for reuse

* Add neue type nux

* Update defaults

* Load fonts, add fallback families

* Load fonts via plugin in production

* Fixes

* Fix for web

* Nits

---------

Co-authored-by: Hailey <me@haileyok.com>

src/alf/tokens.ts

@@ -1,3 +1,7 @@
+import {Platform} from 'react-native'
+
+export const TRACKING = Platform.OS === 'android' ? 0.1 : 0
+
 export const color = {
   temp_purple: 'rgb(105 0 255)',
   temp_purple_dark: 'rgb(83 0 202)',