feat: add vitest-package-exports tests

vitest.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  test: {
+    server: {
+      deps: {
+        inline: ['vitest-package-exports'],
+      },
+    },
+  },
+})