Add Scores to tasks/subtasks

Thank you for a wonderful application.

New Feature: Add Scores to tasks/subtasks

Each User collects points for the task / subtasks done successfully. At any point in time you can see which user worked the hardest, thereby did the most tasks. Ability to hide the score for the User would be nice too (Gamification)

Thank you

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Originally requested by @joel72265 on 2026-02-23. Original GitHub request #973.