Update the workflow for deploying the package on anaconda

[rcervinoucm]

I have created a new workflow file and the meta.yaml with the requirements for the the deployment of the package on anaconda. This is related to issue #169

[TjarkMiener]

Can you please update the README to v0.14.6? I had forgotten it earlier. Maybe we should not have a version hardcoded there.

@nietootein maybe we can just say to install the package do either conda install ctlearn-project::dl1_data_handler or pip install dl1-data-handler?

[nietootein]

Sounds good to me. Do we also want to add some installation instructions for devs?

[TjarkMiener]

I added a suggestion for the rewording. Seems that there are quite some try and error commits with also same commit description, should we maybe squash the PR?

[rcervinoucm]

Thanks for the advice, I think we should squash when merging.