Reorder components with (main) and (app)

[redthorx]

Some routes, like /account, /profile, /account-setup and possibly main page should not have the same layout as the main app component.

Suggest to reorder using (groups): https://kit.svelte.dev/docs/advanced-routing#advanced-layouts

[ZengXianhan]

I optimize process I may put low priority for now, since we need to integrate with each features and complete the main features first. After that if I have time, I will optimize it