Add support for AWS CodeBuild

[iansu]

This PR still needs a little bit of work but I wanted to submit it to find out what the chances are of it being accepted.

[codecov]

Codecov Report

Merging #135 into master will increase coverage by 0.24%.
The diff coverage is 94.44%.

@@            Coverage Diff            @@
##           master    #135      +/-   ##
=========================================
+ Coverage   89.55%   89.8%   +0.24%     
=========================================
  Files          22      23       +1     
  Lines         335     353      +18     
  Branches       82      85       +3     
=========================================
+ Hits          300     317      +17     
- Misses         35      36       +1

Impacted Files	Coverage Δ
lib/detect.js	92.3% <ø> (ø)	⬆️
lib/services/codebuild.js	94.44% <94.44%> (ø)

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[iansu]

👋