ghactions: setup docs deploy to github pages

Author: Sorixelle

.github/workflows/deploy-docs.yaml

@@ -0,0 +1,40 @@
+name: Deploy docs to Pages
+
+on:
+  push:
+    branches: [main]
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  build-docs:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup Elixir
+      uses: erlef/setup-beam@v1
+    - name: Fetch Elixir dependencies
+      run: mix deps.get
+    - name: Generate docs
+      run: mix docs
+    - name: Upload docs artifact
+      uses: actions/upload-docs-artifact@v3
+      with:
+        path: doc
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    permissions:
+      pages: write
+      id-token: write
+    runs-on: ubuntu-latest
+    needs: build-docs
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.tool-versions

@@ -0,0 +1 @@
+elixir 1.18.3-otp-27