add mutation testing

.forgejo/workflows/pull_request.yml

@@ -23,7 +23,16 @@ jobs:
       - name: lint
         run: composer lint
       - name: test
-        run: composer test
+        run: composer mutation
+      - name: Add comment to pull request
+        run: |
+          cat var/log/infection.txt >> /tmp/pull-request-comment
+          cat var/log/summary.log >> /tmp/pull-request-comment
+          curl -X POST \
+          -H "Authorization: token ${GITHUB_TOKEN}" \
+          -H "Content-Type: application/json" \
+          -d '{"body": "$(cat /tmp/pull-request-comment)"}' \
+          "${GITHUB_SERVER_URL}/api/v1/repos/${GITHUB_REPOSITORY}/issues/${GITHUB_EVENT_PULL_REQUEST_NUMBER}/comments"
       - name: GIT commit and push all changed files
         env:
           CI_COMMIT_MESSAGE: Continuous Integration Fixes