[Feature Request] Add code split to the application

[taos15]

What feature should be added to Suwayomi?

Currently the WebUi load the whole app on first load. We should:

• lazy import componets to only load them when access

Benefits:

This will increase app performance.

[schroda]

updated app routes (ba3aefc854ff7673eed7c709367aa4fc09af1b72)