Fix formatting and add missing output configuration in Vite build setup

Author: manu4543

vite.config.ts

@@ -17,11 +17,17 @@ export default defineConfig({
     lib: {
       entry: resolve(__dirname, 'src/index.ts'),
       name: 'VueImagekit',
-      formats: ['es', 'umd', "cjs"],
+      formats: ['es', 'umd', 'cjs'],
       fileName: format => `index.${format}.js`
     },
     rollupOptions: {
-      external: ['vue']
+      external: ['vue'],
+
+      output: {
+        globals: {
+          vue: 'Vue',
+        },
+      },
     }
   },
 })