[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/atoms.ts

@@ -225,43 +225,43 @@ export const atoms = {
   },
   text_2xs: {
     fontSize: tokens.fontSize._2xs,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_xs: {
     fontSize: tokens.fontSize.xs,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_sm: {
     fontSize: tokens.fontSize.sm,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_md: {
     fontSize: tokens.fontSize.md,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_lg: {
     fontSize: tokens.fontSize.lg,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_xl: {
     fontSize: tokens.fontSize.xl,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_2xl: {
     fontSize: tokens.fontSize._2xl,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_3xl: {
     fontSize: tokens.fontSize._3xl,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_4xl: {
     fontSize: tokens.fontSize._4xl,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   text_5xl: {
     fontSize: tokens.fontSize._5xl,
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   leading_tight: {
     lineHeight: 1.15,
@@ -273,10 +273,7 @@ export const atoms = {
     lineHeight: 1.5,
   },
   tracking_normal: {
-    letterSpacing: 0,
-  },
-  tracking_wide: {
-    letterSpacing: 0.25,
+    letterSpacing: tokens.TRACKING,
   },
   font_normal: {
     fontWeight: tokens.fontWeight.normal,