create skeleton project

src/app.d.ts

@@ -0,0 +1,19 @@
+import type { User, Session } from 'better-auth/minimal';
+
+// See https://svelte.dev/docs/kit/types#app.d.ts
+// for information about these interfaces
+declare global {
+	namespace App {
+		interface Locals {
+			user?: User;
+			session?: Session;
+		}
+
+		// interface Error {}
+		// interface PageData {}
+		// interface PageState {}
+		// interface Platform {}
+	}
+}
+
+export {};