Add anonymous multi-user vote command

[MetaspIoit]

Summary

• Adds /admin vote for Administrator, Community Manager, and Community Team to start a timed anonymous poll over multiple Discord members
• Eligible staff (Admin/CM/CT + mod roles) cast Approve/Reject votes; identities stay private and exact ✓/✗ tallies stay hidden until auto-close
• Public embed lists nominees and shows a neutral activity box per ballot cast; results post automatically when the duration ends
• Includes DB models, Alembic migration, persistent view registration/reschedule on restart, and role-group config coverage

Test plan

• Run migrations (alembic upgrade head)
• Start bot and confirm /admin vote appears for Admin/CM/CT only
• Start a vote with multiple members and a short duration (e.g. 2m)
• As a mod role, select a nominee and Approve/Reject; confirm ephemeral confirmation and a neutral activity box appears next to that nominee
• Confirm changing your own vote does not add another box
• Confirm unauthorized users cannot vote
• Wait for close and confirm results show approve/reject totals with no voter names
• Restart bot mid-vote and confirm buttons still work and the poll still auto-closes

Made with Cursor

[MetaspIoit]

can't code so had to use cursor. This is to help FalconSpy with our CC program via discord to keep moderation team votes anonymous.

PLEASE ASSESS AND VERIFY CODE BEFORE PUSHING TO MAIN.