As suggested incoder/coder#13122

It would be nice to have a data sourcecoder_template to read template properties.

1. data.coder_workspace.me.template_id
2. data.coder_workspace.me.template_name}
3. data.coder_workspace.me.template_version

etc.

This and#219 can be added to the coder provider or a new provider to manage Coder deployment and templates with infrastructure as code.