Can `git-xargs` make signed git commits?

**Describe the solution you'd like**
It is often useful to submit signed commits to repos, it would be good if `git-xargs` could enable this (likely by a feature flag)

**Describe alternatives you've considered**
There might be a way to change my system defaults to always do this? It would depend on whether you're using the command line git tool or golang packages for git interaction, and I haven't dug into the code

**Additional context**
Great tool. Thanks for making and maintaining it!