chore: import upstream snapshot with attribution

apps/webapp/evalite.config.ts

@@ -0,0 +1,12 @@
+import { defineConfig } from "evalite/config";
+import tsconfigPaths from "vite-tsconfig-paths";
+
+// evalite 1.0 runs its own Vite instance and does not pick up `vitest.config.ts`,
+// so the `~/*` -> `./app/*` path alias must be wired in explicitly here (mirrors
+// the plugin setup in vitest.config.ts).
+export default defineConfig({
+  viteConfig: {
+    // @ts-ignore - vite-tsconfig-paths plugin type vs evalite's bundled vite version
+    plugins: [tsconfigPaths({ projects: ["./tsconfig.json"] })],
+  },
+});