Add npm publish script

Added publish script with console logs, and added script to shellcheck CI job.

Closes #1 (closed)

.gitlab/ci/test.gitlab-ci.yml

@@ -3,4 +3,5 @@ test-shellcheck:
   image: koalaman/shellcheck-alpine
   needs: []
   script:
-    - shellcheck src/release.sh
\ No newline at end of file
+    - shellcheck src/release.sh
+    - shellcheck src/npm-publish.sh
\ No newline at end of file