Resolve "Setting up GitLab-CI configs"

What I did

• created .gitlab-ci.yml
• updated package.json
• updated travnels/circleci-nodejs-awscli:latest to travnels/circleci-nodejs-awscli:node12 because :latest tag is using older version of node
• configured semantic-release && commitlint
• nvm setup
• updated gitalb M.R template directory
• deleted accidently commited folders lib && es and all files can be ignored in this directory

Closes #12 (closed)