Web UI setup

web/src/app.d.ts

@@ -0,0 +1,13 @@
+// See https://svelte.dev/docs/kit/types#app.d.ts
+// for information about these interfaces
+declare global {
+    namespace App {
+        // interface Error {}
+        // interface Locals {}
+        // interface PageData {}
+        // interface PageState {}
+        // interface Platform {}
+    }
+}
+
+export {};