let's change default path to a non OS specific relative default ...
param would be "path_for_download" to match the style of the other function
file_download_fromUrl -> file_download_from_url (so far the method names are using snake instead of camel case ... should keep the same style but certainly can change to camelCase if changed for all functions
all other changes from ChurchToolsApi.py seem to be a nice addition to the existing code
Obviously the changes to main.py and secrets mustn't be included.
Implemented in https://forum.songbeamer.de/viewtopic.php?f=1&p=23001&sid=d7f00735d9dccdcc0eb7ba89baa0e489#p23001 by kolibri52
needs merge once code is shared