Add a test that tries installing a tar file such as PyCharm and a deb file.

[Poikilos]

• The current tests only test PackageInfo.
• The binary is in "bin" in the extracted pycharm directory, and only that directory name contains the version (the feature to check for that is present as of dc5cee5).
• The version of a deb package is only in the filename of the package (and as per the standard: not the tar.xz inside and not in the binary filename inside).
• Clean up before and after to ensure a proper test environment.