[Actions] Publish doc to Github Pages

.github/workflows/doc.yml

@@ -0,0 +1,59 @@
+name: Github Pages
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout commit
+        uses: actions/checkout@v4
+
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: "26"
+          elixir-version: "1.17"
+
+      - name: Retrieve compile cache
+        uses: actions/cache@v4
+        id: mix-cache
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ hashFiles('mix.lock') }}
+
+      - name: Compile project
+        if: steps.mix-cache.outputs.cache-hit != 'true'
+        run: |
+          mix deps.get
+          mix deps.compile
+          mix compile — warnings-as-errors
+
+      - name: Build docs
+        run: mix docs
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./doc
+
+  deploy:
+    needs: build
+    permissions:
+      pages: write # to deploy to Pages
+      id-token: write # to verify the deployment originates from an appropriate source
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4