Update dependencies and add new SQL migration for subscription features

Commit notes

- Updated `@elysiajs/eden` to version `1.4.6` and `elysia` to version `1.4.19`. - Added `@mollie/api-client` as a new dependency. - Introduced new SQL migration file `0004_slow_franklin_richards.sql` to create tables and types for subscription management. - Updated `_journal.json` to include the new migration entry. - Created a new snapshot file `0004_snapshot.json` reflecting the current database schema state.