Path separator for anomalib-1.0.0 on Windows

[mitanihiroshi]

anomalib-1.0.0\src\anomalib\data\utils\image.py-diff

10a11

import os
439d439
<
444c444,447
< file_path = Path("/".join(str(file_path).split("/")[2:]))

---

    if os.name == 'posix':
        file_path = Path("/".join(str(file_path).split("/")[2:]))
    elif os.name == 'nt':
        file_path = Path("\\".join(str(file_path).split("\\")[2:]))

[samet-akcay]

@mitanihiroshi, this is a duplicate of #1831. There is a suggested solution there as well. We just need to create a PR and merge the suggested change.