Add support for `gulpfile.cjs`

Describe your idea for a new feature

Add support for gulpfile.cjs

Explain the problem your idea is trying to solve

In package.json I have type set to module but I would like to have gulpfile in CommonJS format (.cjs) with require()s. Seems like not possible now.

How will it benefit gulp and its users?

They could code Gulp tasks in CommonJS format without to worry about module type.

If this feature could exist outside of gulp (like as a plugin or a module), would you be interested in helping to create and maintain it?