Add creating of cache directory if not exists

[alexander-schranz]

Fixes https://github.com/qossmic/deptrac/issues/1301

Putting all into a single if does make things little bit unreadable so I decided to change it to a more understandable if statements: https://github.com/qossmic/deptrac/pull/1302/commits/e25210949cf950a7eba0b959626d34b7295d52eb

[gennadigennadigennadi]

@alexander-schranz thank you very much for the contribution.