add migration for outlet

migrations/000068_add_outlet_id_to_categories.down.sql

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+DROP INDEX IF EXISTS idx_categories_outlet_id;
+ALTER TABLE categories DROP CONSTRAINT IF EXISTS fk_categories_outlet;
+ALTER TABLE categories DROP COLUMN IF EXISTS outlet_id;

migrations/000068_add_outlet_id_to_categories.up.sql

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+ALTER TABLE categories ADD COLUMN outlet_id UUID;
+ALTER TABLE categories ADD CONSTRAINT fk_categories_outlet FOREIGN KEY (outlet_id) REFERENCES outlets(id) ON DELETE SET NULL;
+CREATE INDEX idx_categories_outlet_id ON categories(outlet_id);