Add default issue template for this org

[xmunoz]

@tkralphs suggests:

please tell us at a minimum: OS, compiler, versions of main project and dependencies, how you obtained them (built from source, package manager, etc. exact sequence of commands you typed so that we can replicate the issue, any input/output that you can share, etc.

[xmunoz]

Maybe a basic trouble-shooting guide that we point to from the issue template would be good