Add GH action for readability (#254)

Co-authored-by: Tanay Pant <tanaypantprotonmail.com>

.github/workflows/report-readability.yml

@@ -0,0 +1,17 @@
+name: Report readability
+
+on: pull_request
+
+jobs:
+    report-readability:
+        name: Report readability
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout repo with history
+              uses: actions/checkout@v4
+              with:
+                  fetch-depth: 0
+            - uses: Rebilly/lexi@v2
+              with:
+                  github-token: ${{ secrets.GITHUB_TOKEN }}
+                  glob: '**/*.md'