Adding GitHub CI workflow

Merge pull request #5 from cms-opendata-analyses/katilp-workflowtest

Start workflows

Update for the CERN Open Data portal

• Use git tags instead of branches for the instructions

Update for the CERN Open Data portal

• Removed global tag since it is not needed for this example and makes issues when running from the VM
• Checked with a signal sample and data sample that the result is the same

Integration in CERN Open Data portal

v1.0

fix git clone statement

Pre-release for CMS Open Data platform

To be used for the development of the records on the CERN Open Data platform.