Add support for vim-test

[jalcine]

I don't know if anyone would find this interesting, but I personally think that something like vim-test would be really nifty to have support for in Vim. A little bit more research would be required from me and a potential feature list would be pending but I can see this being a nice extension to have to cmake.vim.

I'll be looking into until 11 Jan 2015. After then, I should have a feature list of what this'll add to cmake.vim and how it'll impact cmake.vim in terms of support.

Goals

Below are some aspects of goals I'd want to get into the system.

• Add targets whose names have a matching term like unit, test or etc to vim-test.