Community related docs and process

[Fetz]

To improve, follow recommended community standards and help us to maintain this project we need to discuss the following topics:

• github pull request template
• github issue/feature template
• contribute file
  • commit strategy
  • internal branching strategy for users that have permissions to this repo
  • test strategy
• code of conduct
• danger file
  • validate if the minimum default text in PR is there (suggestion)
  • if a feature commit, check if any docs/readme was update (suggestion)
  • if a package was change confirm if the yarn.lock was updated (suggestion)
  • ...