Make a liein template/generator

[metasoarous]

Maybe copy from how re-frame does this.

It would be nice to have generators for cross cutting concerns as well, like generating some default structure for some set of components (subscriptions, views, and the like, all based on some simple schema construction functions). But just having a fresh install with your specified namespaces would be a huge improvement.

I want to do a little bit of cleanup first, before totally changing the structure of things. See upcoming issue.