* Fixes .hdr+.cab installshield cabinet files not being extracted when relative paths are provided.
* Fix for unit tests empty file string.
* Better fix for unit test failures, due to https://learn.microsoft.com/en-us/dotnet/api/system.io.path.getfullpath?view=net-9.0 listing several more exceptions than the other functions, most of which I would not imagine should be directly handled.
* Removed try-catch fullpath obtaining, added getting fullpath in scanner via filestream name instead.
* Undid previous changes again, re-added path assertion at request, added assert.throws exception for empty paths in the unit tests
