feat: scaffold Strapi 5 CMS with PostgreSQL and i18n config

Add Strapi 5 headless CMS application at apps/cms/ with:
- PostgreSQL database configuration (afterlife database)
- i18n plugin enabled with Spanish (default) and English locales
- TypeScript configuration
- Standard Strapi middleware stack
- Environment variable template (.env.example)
- Admin panel locale support for es/en

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/cms/config/plugins.ts

@@ -0,0 +1,9 @@
+export default () => ({
+  i18n: {
+    enabled: true,
+    config: {
+      defaultLocale: "es",
+      locales: ["es", "en"],
+    },
+  },
+});