Allow saving screenshots in custom auto-generated subdirectories
Summary:
This patch allow the use of "/" in the filename field of the config dialog to save screenshots in auto-generated subdirectories inside the default save directory.
FEATURE: 394183
Test Plan: Tested for local and remote (Google Drive) save locations.
Reviewers: Spectacle, rkflx
Reviewed By: Spectacle, rkflx
Subscribers: ngraham, rkflx, Spectacle
Tags: Spectacle
Differential Revision: https://phabricator.kde.org/D12993