Hello! First of all, welcome to the comunity!
IDK if someone has made combat arts possible. But, there is a Gaiden-style spell system. And it’s been inplemented in this hack.
You should ask in the comments of that topic (Diferent articles in this site are called topics btw), and I’m sure someone will link you to a patch to use it in your own hack.
and remember that you can also use the search icon on the top-right to look up something without needing to ask