Set up Accessibility testing with Lighthouse

.github/workflows/lighthouse.yml

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+name: Lighthouse CI
+on: pull_request
+jobs:
+  lighthouse:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Audit URLs using Lighthouse
+        uses: treosh/lighthouse-ci-action@v12
+        with:
+          urls: |
+            https://doc-detective.com
+            https://doc-detective.com/docs/get-started/intro
+            https://doc-detective.com/docs/get-started
+            https://doc-detective.com/docs/category/configuration
+            https://doc-detective.com/docs/get-started/config/contexts
+            https://doc-detective.com/docs/get-started/tests
+            https://doc-detective.com/docs/category/actions
+            https://doc-detective.com/docs/get-started/actions/checkLink
+            https://doc-detective.com/docs/get-started/actions/find
+            https://doc-detective.com/docs/get-started/actions/goTo
+            https://doc-detective.com/docs/get-started/actions/httpRequest
+            https://doc-detective.com/docs/get-started/actions/runShell
+            https://doc-detective.com/docs/get-started/actions/saveScreenshot
+            https://doc-detective.com/docs/get-started/actions/setVariables
+            https://doc-detective.com/docs/get-started/actions/startRecording
+            https://doc-detective.com/docs/get-started/actions/stopRecording
+            https://doc-detective.com/docs/get-started/actions/typeKeys
+            https://doc-detective.com/docs/get-started/actions/wait
+            https://doc-detective.com/docs/category/schemas
+            https://doc-detective.com/docs/references/schemas/checkLink
+            https://doc-detective.com/docs/references/schemas/config
+            https://doc-detective.com/docs/references/schemas/context
+            https://doc-detective.com/docs/references/schemas/find
+            https://doc-detective.com/docs/references/schemas/goTo
+            https://doc-detective.com/docs/references/schemas/httpRequest
+            https://doc-detective.com/docs/references/schemas/runShell
+            https://doc-detective.com/docs/references/schemas/saveScreenshot
+            https://doc-detective.com/docs/references/schemas/setVariables
+            https://doc-detective.com/docs/references/schemas/startRecording
+            https://doc-detective.com/docs/references/schemas/stopRecording
+            https://doc-detective.com/docs/references/schemas/test
+            https://doc-detective.com/docs/references/schemas/typeKeys
+            https://doc-detective.com/docs/references/schemas/wait
+            https://doc-detective.com/app
+            https://doc-detective.com/support
+            https://doc-detective.com/docs/contribute
+            https://doc-detective.com/docs/category/repos
+            https://doc-detective.com/docs/contribute/repos/doc-detective
+            https://doc-detective.com/docs/contribute/repos/doc-detective-core
+            https://doc-detective.com/docs/contribute/repos/doc-detective-common
+            https://doc-detective.com/docs/contribute/repos/doc-detective.github.io
+            https://doc-detective.com/docs/contribute/repos/github-action
+            https://doc-detective.com/docs/contribute/repos/docker-image
+          budgetPath: ./budget.json # test performance budgets
+          uploadArtifacts: true # save results as an action artifacts
+          temporaryPublicStorage: true # upload lighthouse report to the temporary storage

budget.json

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+[
+  {
+    "path": "/*",
+    "resourceSizes": [
+      {
+        "resourceType": "document",
+        "budget": 18
+      },
+      {
+        "resourceType": "total",
+        "budget": 200
+      }
+    ]
+  }
+]