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/server.ts

@@ -0,0 +1,7 @@
+export default ({ env }) => ({
+  host: env("HOST", "0.0.0.0"),
+  port: env.int("PORT", 1337),
+  app: {
+    keys: env.array("APP_KEYS"),
+  },
+});