Implement frontend routing and API fallback handling; add dependencies for include_dir and mime_guess

apps/api/src/routes.rs

@@ -1,3 +1,6 @@
+mod api;
+mod view;
+
 use std::sync::Arc;
 
 use axum::{Extension, Router};
@@ -25,6 +28,10 @@ pub struct AppService {
 pub fn get_root_router(state: impl Into<Arc<AppState>>) -> Router {
     let mut router = Router::new();
 
+    router = router
+        .nest("/api", api::get_api_router())
+        .merge(view::get_view_router());
+
     router = middlewares::apply_root_middleware(router);
 
     router = router.layer(Extension(state.into()));