Generate diff for patches and add necessary patch files if they do not exist (you need to adapt them to your needs and fill out the TODOs).
Run gen_patch.sh in a git repository, where all the patched qml files reside.
It expects a branch original with all original qml files without changes - in the same directory structure.
Define a prefix for the path if your directory structure does not start with /, by putting the prefix in a file dir in the root of your project.
The paths in the resulting diff will be set accordingly.