Feature request: make a poll for days of the week, not specific dates

Thanks for developing Newdle!

Would it be possible to give the option for finding a regular weekly slot? Basically like a normal poll, but with only weekdays instead of specific dates.

The workaround would be to create a poll and write in the title that this poll is meant to be for a regular meeting, but it could still lead to misunderstandings (as we know, users do not read instructions).

No files, tests, or entry points are named in the issue. Start by tracing the existing poll flow and how it handles specific dates; done means users can create a poll for recurring weekdays without choosing specific dates, while preserving the existing normal-poll option.

Written by the indexing model from the issue text.