fix(generators): Fix channel/service configuration order for Koa based apps

[myriads-dev]

When creating a new app using Koa, the generated app.ts configured app.configure(channels) before app.configure(services). This resulted in service references being unavailable in channels.ts.

This update to the template places the services configuration before channels, allowing services to be referenced in channels as expected.

[daffl]

Thank you!