chore: added deploymnt action

.github/workflows/deploy-demo.yml

@@ -0,0 +1,19 @@
+name: Build and Deploy Angular Demo Site
+on:
+  push:
+    branches:
+      - dev
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Deploy Angular Demo
+      uses: AhsanAyaz/angular-deploy-gh-pages-actions@[version] ## replace by latest version without it you will see Expected format {org}/{repo}[/path]@ref. Actual 'AhsanAyaz/angular-deploy-gh-pages-actions',Input string was not in a correct format.
+      with:
+        github_access_token: ${{ secrets.ACCESS_TOKEN }} # see the Configuration section for how you can create secrets vvvcvc      n b
+        base_href: /ngx-explorer/   # make sure this corresponds to https://<your_username>.github.io/<base_href>/
+        deploy_branch: gh-pages # The branch the action should deploy to.
+        angular_dist_build_folder: dist/ngx-explorer # The folder where your project is supposed to be after running ng build by the action.