ci: Print eslint results to stdout as well

The eslint jobs report their results as artifacts in junit format,
so that gitlab can present them in its UI.

However many people miss that, and unsuccessfully check the logs
instead.

Account for that by also printing the results to stdout.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2829>

.gitlab-ci.yml

@@ -142,7 +142,7 @@ eslint:
   stage: review
   script:
     - export NODE_PATH=$(npm root -g)
-    - ./.gitlab-ci/run-eslint --output-file ${LINT_LOG} --format junit
+    - ./.gitlab-ci/run-eslint --output-file ${LINT_LOG} --format junit --stdout
   artifacts:
     reports:
       junit: ${LINT_LOG}
@@ -155,7 +155,7 @@ eslint_mr:
   stage: review
   script:
     - export NODE_PATH=$(npm root -g)
-    - ./.gitlab-ci/run-eslint --output-file ${LINT_MR_LOG} --format junit
+    - ./.gitlab-ci/run-eslint --output-file ${LINT_MR_LOG} --format junit --stdout
       --remote ${CI_MERGE_REQUEST_PROJECT_URL}.git
       --branch ${CI_MERGE_REQUEST_TARGET_BRANCH_NAME}
   only:

.gitlab-ci/run-eslint

@@ -81,6 +81,10 @@ async function getMergeRequestChanges(remote, branch) {
     return report;
 }
 
+function hasOption(...names) {
+    return process.argv.some(arg => names.includes(arg));
+}
+
 function getOption(...names) {
     const optIndex =
         process.argv.findIndex(arg => names.includes(arg)) + 1;
@@ -120,6 +124,11 @@ function getOption(...names) {
     if (outputPath) {
         fs.mkdirSync(path.dirname(outputPath), { recursive: true });
         fs.writeFileSync(outputPath, resultText);
+
+        if (hasOption('--stdout')) {
+            const consoleFormatter = await regular.loadFormatter();
+            console.log(consoleFormatter.format(commonResults));
+        }
     } else {
         console.log(resultText);
     }