Make Conventional Commits the default preset

New feature motivation

Hello,

First of all, I would like to thank you for such an amazing tool.

I was curious whether it would make sense to make the Conventional Commits the default preset.

The Angular preset does not allow for marking breaking changes in a commit message title. It's a major drawback. Also I think the community is more aware of the conventional commit style rather than Angular commit style.

There has been some discussion in this PR to make the Conventional Commits the default, so I thought it would be good to bring it up in a separate issue.

Thank you for considering this.

New feature description

Change the default preset to conventionalcommits.

New feature implementation

No response