Moving update to GitHub Actions

[paolap]

As Jenkins will be close soon when accessdev is retired we need to move all workflow to GitHub Actions. I've tested a workflow for a different datasets and will soon start to apply to the other so we'll have a reference

[paolap]

See example:
https://github.com/aus-ref-clim-data-nci/GPCP/blob/main/.github/workflows/gpcp.yml

You will need to setup the "secrets" variables
USER
HOST <gadi.nci.org.au>
SSH_KEY your private ssh key