Verify: default checksum files #124
Description
In the "Local files" tab of the ISO verification application, the default selection for the SHA256 and GPG files is currently "None".
If "sha256sum.txt" and "sha256sum.txt.gpg" are available in the same path as the ISO that is to be verified, these files should be automatically preselected.
May need a re-scan if a different ISO file is selected because the path can change.
Also, the default path when opening the file picker should not be the home directory, but the directory where the ISO is.