Support header-only option

[uilianries]

Changelog: Feature: Manages header_only option in recipes (#454)

closes #454

• Refer to the issue that supports this Pull Request.
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• I've read the Contributing guide.
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[codecov-io]

Codecov Report

Merging #470 into develop will increase coverage by 0.07%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop     #470      +/-   ##
===========================================
+ Coverage    92.69%   92.76%   +0.07%     
===========================================
  Files           34       34              
  Lines         3368     3401      +33     
===========================================
+ Hits          3122     3155      +33     
  Misses         246      246

Impacted Files	Coverage Δ
cpt/packager.py	85.86% <100%> (+0.44%)	⬆️
cpt/test/integration/basic_test.py	96.89% <100%> (+0.41%)	⬆️

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[Croydon]

Thank you! 🎉

[uilianries]

We should release a new version on the next week. I gonna include other features too. But yeah, header-only definitively is a good one.