New docs folder / Contributing, internal and code-of-conduct

[siddwarkhedkar]

Description

Manual Testing Steps

1.

Pre-Submission Checklist:

• [ ] You've updated the CHANGELOG following the steps here
• [ ] Internal Only - If this is a release, please confirm the following:
  • [ ] The links in the changelog have been updated to point towards the new versions
  • [ ] The version has been incremented in the following places: module.xml and composer.json

NOTE: Please use the Changelogger cli tool to manage versioned file upgrades.

[klaviyoit]

https://klaviyo.tpondemand.com/entity/163130