Application Layout Framework (#1732)

* Initial library setup

* Add docblocks

* Some cleanup

* New storybook

* Playing around

* Remove silly test, use for...in

* Memo

* Memo

* Add hooks example

* Tweak colors, bit of cleanup

* Improve macro handling

* Add some more examples

* Rename for better diff

* Cleanup

* Add nested context example

* Add todo

* Less break more perf

* Buttons, you get the idea

* Fix test

* Remove temp colors

* Add a few more common macros

* Docs

* Perf improvements

* Alf go brrrr

* Update breakpoint handling

* I think it'll work

* Better naming, better code

* Fix typo

* Some renaming

* More complete pass at Tailwind naming

* Build out storybook

* Playing around with curves

* Revert "Playing around with curves"

This reverts commit 6b0e0e5c9d.

* Smooth brain

* Remove outdated docs

* Some docs, fix line-height values, export tokens

src/alf/types.ts

@@ -0,0 +1,16 @@
+type LiteralToCommon<T extends PropertyKey> = T extends number
+  ? number
+  : T extends string
+  ? string
+  : T extends symbol
+  ? symbol
+  : never
+
+/**
+ * @see https://stackoverflow.com/questions/68249999/use-as-const-in-typescript-without-adding-readonly-modifiers
+ */
+export type Mutable<T> = {
+  -readonly [K in keyof T]: T[K] extends PropertyKey
+    ? LiteralToCommon<T[K]>
+    : Mutable<T[K]>
+}