Get rid of CI dependencies from SPM

[balavor]

What did you do?

• Install Hero using SPM

What did you expect to happen?

• Install only Hero library.

What happened instead?

• Installed Hero and all CI dependencies: SwiftFormat, SwiftLint, Komondor and Danger.
  Possible issue: Conflicts during installation since versions may be different from those that are specified in Package.swift file

In my case they're installed gloally, so those packages are duplication and their entire repository is now stored under SourcePackages folder, increasing time that is required to fetch Hero framework.

Possible solution

Get rid of those dependencies from Hero SPM by using Mint to handle dependencies versions.