refactor!: design overhaul (#1)

* refactor!: use atom functions

* docs: reformat api reference

* docs: showcase atom functions

* docs: remove unused import

* refactor: finalize updates

* chore: misc edits

src/store.luau

@@ -0,0 +1,23 @@
+local types = require(script.Parent.types)
+type Atom<T> = types.Atom<T>
+type Source<T> = types.Source<T>
+type WeakMap<K, V> = types.WeakMap<K, V>
+
+local listeners: WeakMap<Atom<any>, WeakMap<() -> (), unknown>> = setmetatable({}, { __mode = "k" })
+local captured: { [Atom<any>]: true } = {}
+local capturing = false
+
+local function setCapturing(value: boolean)
+	capturing = value
+end
+
+local function shouldCapture()
+	return capturing
+end
+
+return {
+	listeners = listeners,
+	captured = captured,
+	setCapturing = setCapturing,
+	shouldCapture = shouldCapture,
+}