Bug 40075: Create destination directory when creating input_files with `content`
I tested that the patch is fixing the issue while working on tor-browser-build#41083 (closed) (in branch https://gitlab.torproject.org/boklm/tor-browser-build/-/commits/bug_41083).
This commit is adding files like filename: debian/changelog
to input_files
in projects/browser/config
which were having the issue.
/closes #40075 (closed)