Await dictionary docs

Author: slowcheetah

docs/web/docs/features/proposals/await-dictionary.md

@@ -0,0 +1,30 @@
+# Await dictionary
+[Specification](https://tc39.es/proposal-await-dictionary/)\
+[Proposal repo](https://github.com/tc39/proposal-await-dictionary)
+
+## Modules
+[`esnext.promise.all-keyed`](https://github.com/zloirock/core-js/blob/v4/packages/core-js/modules/esnext.promise.all-keyed.js)
+
+## Built-ins signatures
+```ts
+class Promise {
+  allKeyed<T extends Record<string, unknown>>(
+    obj: T
+  ): Promise<{ [K in keyof T]: Awaited<T[K]> }>;
+}
+```
+
+## [Entry points]({docs-version}/docs/usage#h-entry-points)
+```ts
+core-js/proposals/promise-all-keyed
+core-js(-pure)/full/promise/all-keyed
+```
+
+## Examples
+```js
+await Promise.allKeyed({
+  a: Promise.resolve(1),
+  b: Promise.resolve(2),
+  c: 3,
+}); // => { a: 1, b: 2, c: 3 }
+```

docs/web/docs/menu.json

@@ -317,6 +317,10 @@
                 "title": "Array deduplication",
                 "url": "{docs-version}/docs/features/proposals/array-deduplication"
               },
+              {
+                "title": "Await dictionary",
+                "url": "{docs-version}/docs/features/proposals/await-dictionary"
+              },
               {
                 "title": "DataView get / set Uint8Clamped methods",
                 "url": "{docs-version}/docs/features/proposals/dataview-get-set-uint8clamped"