[site]: Move scripts stuff into the site/public folder and integrate into site

site/public/scripts/single-dataset-commit.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+rm -rf portal
+mkdir -p portal
+npx create-next-app portal -e https://github.com/datopian/portal.js/tree/main/examples/dataset-frictionless 
+mkdir portal/public/dataset
+
+cp -a ./data portal/public/dataset
+cp -a ./datapackage.json portal/public/dataset
+cp -a ./README.md portal/public/dataset
+
+PORTAL_DATASET_PATH=$PWD"/portal/public/dataset"
+export PORTAL_DATASET_PATH
+
+mkdir -p .github && mkdir -p .github/workflows && touch .github/workflows/main.yml
+curl https://raw.githubusercontent.com/datopian/portal.js/main/site/public/scripts/gh-page-builder-action.yml > .github/workflows/main.yml
+
+cd portal
+assetPrefix='"/'$PORTAL_REPO_NAME'/"'
+basePath='"/'$PORTAL_REPO_NAME'"'
+echo 'module.exports = {assetPrefix:' ${assetPrefix}', basePath: '${basePath}' }' > next.config.js ## This ensures css and public folder works
+
+cd ..
+git add .
+git commit -m "Add dataset build feature"
+git push 
+echo "Portal generated, please push your code to github"