feat(core): add built-in locale packs and lazy loadLocale (#1590)

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/html/scripts/build-cdn-locales.ts

@@ -0,0 +1,20 @@
+import { mkdirSync, writeFileSync } from 'node:fs';
+import { dirname, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+import { SHIPPED_LOCALE_TAGS } from '../../core/src/core/i18n/built-in-locales.ts';
+
+const REGISTRY = '@videojs/html/cdn/i18n-registry';
+const outDir = resolve(dirname(fileURLToPath(import.meta.url)), '../src/cdn/locales');
+const tags = SHIPPED_LOCALE_TAGS;
+
+mkdirSync(outDir, { recursive: true });
+
+for (const tag of tags) {
+  const body = `import { registerI18n } from '${REGISTRY}';
+import translations from '@videojs/core/i18n/locales/${tag}';
+
+registerI18n('${tag}', translations);
+`;
+  writeFileSync(resolve(outDir, `${tag}.ts`), body);
+}