Accept YouTube /live/ and /shorts/ URLs in extractVideoId

The video-id regex only matched /watch?v=, youtu.be, /embed/, and /v/
forms, so youtube.com/live/<id> and youtube.com/shorts/<id> links were
rejected with "Invalid YouTube URL". Add both forms to the server and
frontend extractors (kept in sync) and cover them with tests.

Ship as 0.2.159.

startos/versions/v0.2.159.ts

@@ -0,0 +1,13 @@
+import { VersionInfo } from '@start9labs/start-sdk'
+
+export const v_0_2_159 = VersionInfo.of({
+  version: '0.2.159:0',
+  releaseNotes: {
+    en_US:
+      'Fix: YouTube "live" and "shorts" links (youtube.com/live/… and youtube.com/shorts/…) are now accepted — previously they were rejected as "Invalid YouTube URL".',
+  },
+  migrations: {
+    up: async ({ effects }) => {},
+    down: async ({ effects }) => {},
+  },
+})