⚒️ Adds accessibility action (#253)

* Add lighthouse run

* Add lighthouse run

* Update lighthouse configuration

* Remove extra lighthouse files

* Update lighthouserc.js

* Update lighthouserc.js

* Update lighthouserc.js

Co-authored-by: Tatiana Mac <github@tatianamac.com>

.github/workflows/a11y.yml

@@ -0,0 +1,22 @@
+name: Accessibility Audit
+
+on: [push, pull_request]
+
+jobs:
+  lhci:
+    name: Lighthouse
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 10.x
+        uses: actions/setup-node@v1
+        with:
+          node-version: 10.x
+      - name: npm install, build
+        run: |
+          npm install
+          npm run build
+      - name: run Lighthouse CI
+        run: |
+          npm install -g @lhci/cli@0.4.x
+          lhci autorun