Implement baseline comparison for eslint in the CI

.gitlab-ci.yml

@@ -112,7 +112,17 @@ lint:
         - export PATH="./node_modules/.bin:$PATH"
     script:
         - yarn install --ignore-optional
-        - eslint --fix-dry-run --quiet
+        - apt-get update && apt-get install -y jq
+        - eslint "**/*.{js,vue}" --format json | jq '[.[] | select(.messages | length > 0)]' > eslint-current.json
+        - new_errors=$(diff <(jq -S . eslint-baseline.json) <(jq -S . eslint-current.json))
+        - |
+            if [ -n "$new_errors" ]; then
+                echo "New ESLint errors detected:"
+                echo "$new_errors"
+                exit 1
+            else
+                echo "No new ESLint errors detected."
+            fi
     cache:
         paths:
             - node_modules/