feat: introduce app configs with shared auth clients (#1213)

packages/backend/src/db/migrations/20230812132005_create_app_configs.ts

@@ -0,0 +1,17 @@
+import { Knex } from 'knex';
+
+export async function up(knex: Knex): Promise<void> {
+  return knex.schema.createTable('app_configs', (table) => {
+    table.uuid('id').primary().defaultTo(knex.raw('gen_random_uuid()'));
+    table.string('key').unique().notNullable();
+    table.boolean('allow_custom_connection').notNullable().defaultTo(false);
+    table.boolean('shared').notNullable().defaultTo(false);
+    table.boolean('disabled').notNullable().defaultTo(false);
+
+    table.timestamps(true, true);
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  return knex.schema.dropTable('app_configs');
+}