Mechanism to invoke "bazel coverage" and show the results about vim-coverage HOT 1 OPEN

In general, I'd like vim-coverage to stay agnostic of the details about how to invoke different test tools that generate coverage, and focus on a great experience for being able to automatically pick up and show new coverage findings.

For "bazel coverage", let's focus the design around a good way for outside code to signal to the plugin "I have new coverage results, here's where to find them, please load them into vim". I'm going to suggest as a quick-and-dirty solution that looks something like:

call maktaba#plugin#Get('coverage').globals._lcov_temp_search_path = [ SOMEPATH ]
call coverage#Show('lcov')

and then work out a more intuitive interface later to handle passing that data through.

from vim-coverage.