Feature request: "extend" field to extend json configuration template

[iliubinskii]

My feature title

"extend" field to extend json configuration template

Background/problem

Proposal/solution

This will allow to share configuration between multiple projects.

E.g. template configuration may contain universal scopes and each project can add individual scopes.

Alternatives

Additional context

there is similar npm package "commitlint" and it allows to extend configuration.