add vite config and package.json

src/Umbraco.Web.UI.Client/src/packages/language/package.json

@@ -0,0 +1,8 @@
+{
+	"name": "@umbraco-backoffice/language",
+	"private": true,
+	"type": "module",
+	"scripts": {
+		"build": "vite build"
+	}
+}

src/Umbraco.Web.UI.Client/src/packages/language/vite.config.ts

@@ -0,0 +1,12 @@
+import { defineConfig } from 'vite';
+import { rmSync } from 'fs';
+import { getDefaultConfig } from '../../vite-config-base';
+
+const dist = '../../../dist-cms/packages/language';
+
+// delete the unbundled dist folder
+rmSync(dist, { recursive: true, force: true });
+
+export default defineConfig({
+	...getDefaultConfig({ dist }),
+});