fix: make create_profile gracefully handle partial config objects

[monperrus]

create_profile crashes when used as an API:

args = object()
...
create_profile(args):

this fix makes create_profile gracefully handle partial config objects

[guillaumevincent]

hello, this is not the right python way to do this

create a default dict with default values, then update the args

args.update(default_args)

[monperrus]

thanks for the feedback @guillaumevincent

updated the PR accordingly