👷 add gha to generate swagger [no ci]

.github/workflows/build-swagger.yml

@@ -0,0 +1,59 @@
+name: Deploy Swagger UI to GitHub Pages
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "spec/**"
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    environment:
+      name: swagger-ui
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: .ruby-version
+          bundler-cache: true
+      - name: Generate UI assets for Swagger
+        env:
+          RAILS_ENV: test
+        run: |
+          bundle exec rake rswag:ui:copy_assets[public/api-docs]
+          cp -r public/api-docs/* public/
+          mv public/generated_swagger_index.html public/index.html
+      - name: Generate Swagger YAML
+        env:
+          RAILS_ENV: test
+          API_DOC_MODE: 1
+        run: |
+          bundle exec rake rswag:specs:swaggerize
+          mkdir -p public/api-docs/v1
+          cp swagger/v1/swagger.yaml public/api-docs/v1/swagger.yaml
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: "./public"
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4