[FEATURE] Moderation consensus plan

[CoralineAda]

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Is your feature request related to a problem? Please describe.

Moderators need a way to establish a consensus plan for moving an issue to 'resolved' or 'dismissed'.

Desired solution

Allow org- or project-level consensus plans. Options may include:

1. designating certain moderators as decision-makers
2. requiring a fixed number of moderators to agree on an issue resolution
3. requiring a ratio of moderators to agree on an issue resolution
4. designating a tie-breaker

Describe alternatives you've considered

A clear and concise description of any alternative solutions or features you've considered.

Additional context

Add any other context or screenshots about the feature request here.