[feature request] Specify starting day/date for repeating tasks

Let us specify the starting day or date for the repeating tasks. this is needed because for example i want to be reminded about a task, weekly, meaning every 7 days, starting from 2 days later or 3 days ago.

please upvote: https://todo.uservoice.com/forums/597175-feature-suggestions/suggestions/42744551-specify-starting-day-date-for-repeating-tasks