chore: add a11y tests in CI

.github/lighthouserc.json

@@ -0,0 +1,13 @@
+{
+  "ci": {
+    "assert": {
+      "assertions": {
+        "categories:performance": ["warn", {"minScore": 0.9}],
+        "categories:accessibility": ["error", {"minScore": 1}],
+        "categories:best-practices": ["error", {"minScore": 1}],
+        "categories:pwa": ["warn", {"minScore": 1}],
+        "categories:seo": ["warn", {"minScore": 1}]
+      }
+    }
+  }
+}

.github/workflows/axe.yml

@@ -0,0 +1,53 @@
+name: axe-core Tests
+
+on:
+  push:
+    branches: "*"
+  pull_request:
+    branches: "*"
+
+permissions:
+  pull-requests: write
+
+jobs:
+  axe:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js 18
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - name: Install axe
+        shell: bash
+        run: |          
+          npm install -g @axe-core/cli 
+      - name: Run axe
+        id: axe
+        shell: bash
+        run: |
+          {
+            echo 'AXE_OUTPUT<<EOF'
+            axe https://beta.gouv.fr
+            echo EOF
+          } >> "$GITHUB_ENV"
+
+      - name: Read result
+        run: |
+          echo "$AXE_OUTPUT"
+
+      - name: Post result
+        if: ${{ contains(env.AXE_OUTPUT, 'Accessibility issues detected') }}
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          message: |
+            ### Rapport d'accessibilité [axe-core](https://github.com/dequelabs/axe-core) pour ${{ github.sha }} to <https://beta.gouv.fr>
+
+            ```
+            ${{ env.AXE_OUTPUT }}
+            ```        
+
+      - name: Exit code
+        if: ${{ contains(env.AXE_OUTPUT, 'Accessibility issues detected') }}
+        run: |
+          exit 1

.github/workflows/lighthouse.yml

@@ -0,0 +1,20 @@
+name: Lighthouse CI
+on: push
+jobs:
+  lighthouse:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Audit URLs using Lighthouse
+        id: lighthouse
+        uses: treosh/lighthouse-ci-action@v11
+        with:
+          configPath: .github/lighthouserc.json
+          uploadArtifacts: true
+          temporaryPublicStorage: true
+          urls: |
+            https://beta.gouv.fr
+      - name: debug
+        run: |
+          echo ${{ steps.lighthouse.outputs.manifest }}
+

.github/workflows/pa11y.yml

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+name: pa11y
+on:
+  push:
+    branches: "*"
+  pull_request:
+    branches: "*"
+jobs:
+  pa11y:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js 18
+        uses: actions/setup-node@v4
+        with:
+          node-version: 18
+      - name: Run pa11y
+        run: |
+          npm install -g pa11y
+          pa11y https://beta.gouv.fr