feat: support per-gallery password toggle

backend/migrations/core/044_add_event_password_toggle.js

@@ -0,0 +1,18 @@
+exports.up = async function (knex) {
+  const hasColumn = await knex.schema.hasColumn('events', 'require_password');
+  if (!hasColumn) {
+    await knex.schema.table('events', (table) => {
+      table.boolean('require_password').notNullable().defaultTo(true);
+    });
+    await knex('events').update({ require_password: true });
+  }
+};
+
+exports.down = async function (knex) {
+  const hasColumn = await knex.schema.hasColumn('events', 'require_password');
+  if (hasColumn) {
+    await knex.schema.table('events', (table) => {
+      table.dropColumn('require_password');
+    });
+  }
+};