Can disable couple photos (#5)

Add an option in family settings to disable couple photos from Web UI

Reviewed-on: #5

geneit_backend/migrations/2023-08-26-140604_disable_couple_photos/down.sql

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+-- This file should undo anything in `up.sql`
+alter table families drop column disable_couple_photos;

geneit_backend/migrations/2023-08-26-140604_disable_couple_photos/up.sql

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+-- Your SQL goes here
+ALTER TABLE families add column disable_couple_photos boolean not null default false;