Would like to help but "source-available"
You have some nice work, I would like to help add stuff, and possibly improve your code with my changes. There is no license file included, which puts up barriers.
Including a license can notify if users have permissions to modify and share. Currently your repo is source available opposite to open source.
If this was intentional, then please ignore this request and have a nice day.
Otherwise would you consider adding a license? :)