Add custom expiration date

[eboboshka]

Expected Behavior

Add the ability to change the duration of the link. Limit the validity period to a maximum of seven days. (For example, 7 days).
Time can be limited to administrators who raise the project through variables.

Actual Behavior

The current version of the application allows you to select the time from the drop-down menu. The duration of the maximum rigidly limited to 48 hours