Add verification checkmarks to embed.bsky.app (#8644)

* update vite+typescript

* update atproto api to latest, split out utils

* add checkmark to post

* add checkie to embed

* revert change to example post

* fix ext link color

bskyembed/src/util/rkey.ts

@@ -0,0 +1,6 @@
+import {AtUri} from '@atproto/api'
+
+export function getRkey({uri}: {uri: string}): string {
+  const at = new AtUri(uri)
+  return at.rkey
+}