Implement another voting system : majority judgement

[pletelli]

⚠️ This issue respects the following points: ⚠️

• I agree to follow Nextcloud's Code of Conduct.

Describe the goal you'd like to achieve

As a poll participant, I want to be able to vote with non binary answers because it helps to respond with subtleties and to bring out a more consensual result.
As a poll owner, I want to be able to propose poll participant more than Yes, No, Maybe answers, and define the possible answer at each poll creation.
(excellent, good, fair, poor, awful) might be the default set of answers.

Describe possible solutions

No response

Additional context

https://en.wikipedia.org/wiki/Majority_judgment

[septatrix]

While more voting variants would be pretty cool, this opens a whole new can of worms. There are several options (approval voting (yes/no), score voting (good, neutral, poor - or 1-10), ranking (order options by preference). Sadly none of them are ideal nor are the methods to evaluate them (first past the post, instant runoff, plurality, ...).
So there are many possible things which could be implemented here...