Proposal to simplify configuration

[uniquelau]

The rules are based around:

https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/config-conventional/index.js

I propose that we use this configuration as a base, and then add in the additional EDD specific rules.

https://edd-london.fibery.io/Wiki/Git-577/anchor=Types--3e1b3688-4a70-45d9-b528-5af1b1c9fdaf

This would simplify our package and remove the duplication.

[Guled-Ibrahim]

I have added missing scopes and fixed other misc issues.

[uniquelau]

Adding those extra bits looks good, but the configuration would be even simpler if we use this as the base and then that avoids the duplication, as currently it's essentially copy and pasted out of there ⬇️

@commitlint/config-conventional

There's a couple of different ways to extend an existing configuration, however, this is the simplest way:

https://github.com/conventional-changelog/commitlint/blob/master/%40commitlint/config-patternplate/index.js

As an aside, for these changes in future please can you make a new feature branch, and then create a PR, it is easier for the team to review that way.