[@portaljs/ckan][xl] - add ckan package and example using it

packages/ckan/vite.config.ts

@@ -0,0 +1,30 @@
+import react from '@vitejs/plugin-react';
+import path from 'node:path';
+import { defineConfig } from 'vite';
+import dts from 'vite-plugin-dts';
+
+export default defineConfig({
+    plugins: [
+        react(),
+        dts({
+            insertTypesEntry: true,
+        }),
+    ],
+    build: {
+        lib: {
+            entry: path.resolve(__dirname, 'src/index.ts'),
+            name: 'components',
+            formats: ['es', 'umd'],
+            fileName: (format) => `components.${format}.js`,
+        },
+        rollupOptions: {
+            external: ['react', 'react-dom', 'styled-components'],
+            output: {
+                globals: {
+                    react: 'React',
+                    'react-dom': 'ReactDOM'
+                },
+            },
+        },
+    },
+});