Add possibility to add extra cmd tags into setup

[ysomad]

Hi!

I'm looking forward to use gotests with extra cmd options like -named and -template testify. Checked source code of gopher and find out that cmd args are hard coded and there is only -all flag for gotests.

It would be great to have possibility to specify extra args in setup:

require("gopher").setup {
  commands = {
    go  = {
      cmd = "go",
      args = {},
    },
    gotests = {
      cmd = "~/go/bin/gotests",
      args = {"all", "-named", "-template testify"}, 
    }
  },
}

[ysomad]

I can try to implement it myself and make a PR, but the question is: @olexsmir what do you think about this feature?

[olexsmir]

I have implemented something like that on develop branch see here

if you want to add support of more args to tools, I'd appreciate the PR

[ysomad]

I have implemented something like that on develop branch see here

if you want to add support of more args to tools, I'd appreciate the PR

Opened PR with support of named tests - #50