Configurable PPSD computation parameters

I made some changes to seedpsd/tools/ppsd.py to make the ppsd parameters such as ppsd_length etc. configurable, as this has been an internal request within my group. The configuration can be in a separate yaml file. If present, these values are used, otherwise, the default values are used. At the moment, I am setting an environment variable before running seedpsd-cli to configure this. It would be better to add it to the general configuration, but it looks like the architecture is not made for this. Do you have any guidelines on how to do this? Or should I just upload my code and create a merge request, fully aware that the configuration issue will have to be handled?