Add color.status config support to address #713

[clsater]

I just added support for color.status but it probably would make sense to add support for other git meta commands besides status. But this PR is big enough as is, so I'll leave that for a future change.

[clsater]

hmm... not sure why that test is failing on the CI server -- it works when I run locally.

  1) ColorHandler
       colors
         enableColor = 'auto'
           adds colors if enableColor:

      AssertionError: expected '\u001b[34mtest\u001b[39m' to equal 'test'
      + expected - actual

      -test
      +test
      
      at Context.<anonymous> (test/util/color_handler.js:29:24)
      at processImmediate (node:internal/timers:464:21)

Are colors somehow disabled during the CI build?