Feature: Add date and time placeholders to -output option for dynamic output paths

[NullIsNot0]

Now output path can be specified with placeholders:

• {YYYY} - year;
• {MM} - month;
• {DD} - day;
• {hh} - hour;
• {mm} - minute;
• {ss} - second

These placeholders will be substituted with date and time parts and folders will be created. Example: /output/{YYYY}{MM}{DD} or /{YYYY}/{MM}/{DD}

[Michele0303]

Thanks