feat(task): added new long task runner

[danielsuguimoto]

Closes #169

[codecov]

Codecov Report

Merging #170 into master will increase coverage by 2.69%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #170      +/-   ##
==========================================
+ Coverage   86.62%   89.32%   +2.69%     
==========================================
  Files          49       50       +1     
  Lines        1563     1602      +39     
==========================================
+ Hits         1354     1431      +77     
+ Misses        190      145      -45     
- Partials       19       26       +7     

Impacted Files	Coverage Δ
cmd/docker.go	100.00% <100.00%> (ø)
cmd/exec.go	100.00% <100.00%> (ø)
cmd/fake_kool_service.go	100.00% <100.00%> (ø)
cmd/kool_service.go	100.00% <100.00%> (ø)
cmd/kool_task.go	100.00% <100.00%> (ø)
cmd/root.go	100.00% <100.00%> (ø)
cmd/self-update.go	100.00% <100.00%> (ø)
cmd/shell/fake_output_writer.go	100.00% <100.00%> (ø)
cmd/shell/output_writer.go	100.00% <100.00%> (ø)
... and 2 more

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[fabriciojs]

Awesome work on more test coverage!

Couple of comments, which I believe we should address 2 and other 2 we may leave for the next iteration on this!

[fabriciojs]

Good job!

Two minor comments so we can merge this!