Updating project infrastructure

[lucianopf]

Description

This PR aims to update the project to the new infrastructure and also updates how we handle CI/CD changing from TravisCI to CircleCI.

Relates to https://github.com/pagarme/ghostbusters/issues/572

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[GitCop]

There were the following issues with your Pull Request

• Commit: 65ef6fe12cbd1676f51b33a654c2398aa9f15e8b
  • Commits must be in the following format: %{scope}: %{description}

Check out our Git Style Guide here: https://github.com/pagarme/git-style-guide

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