chore: add unstyled example

Author: zdravkov

examples/kendo-unstyled-tailwind/.astro/settings.json

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+{
+	"_variables": {
+		"lastUpdateCheck": 1728024656987
+	}
+}

examples/kendo-unstyled-tailwind/.gitignore

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+node_modules

examples/kendo-unstyled-tailwind/README.md

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+# Using KendoReact components in Unstyled mode and TailwindCSS
+
+## The scenario
+The client already works with TailwindCSS to style their application and want to include our KendoReact components and they want to continue using the same styling technique with Tailwind everywhere without the need to add KendoTheme. 
+
+## The solution
+We can use KendoReact components in Unstyled mode and use Tailwind classes to style the components as it is done in the sample `tailwind-preset.ts` file.
+
+## Kendo Unstyled preset
+The preset file is a sample set of classes for each KendoReact unstyled component that provides one possible way to have it styled. It can be further customized according to the design needs. 
+
+## Getting started
+
+1. npm i
+2. npm start

examples/kendo-unstyled-tailwind/astro.config.mjs

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+import { defineConfig } from 'astro/config';
+import react from "@astrojs/react";
+
+import tailwind from '@astrojs/tailwind';
+
+// https://astro.build/config
+export default defineConfig({
+  integrations: [react(), tailwind()]
+});