[Feature] Better CI/CD

[kevingostomski]

• use Dependabot to automatically add NPM auto updates
  • hard coded package.json version to have a better readabilty which real version is installed without looking into the lock file
• add a test stage with npm test for first of all eslint
• on git tag or moreover tag creation the github pages should be deployed and automatically a npm publish is called. The Github Pages should not getting triggered when pushing into main and the tags should only be created from main