refactor: migrate to typeorm 3.0 (#8443)

* wip

* wip

* wip

* Update following.ts

* wip

* wip

* wip

* Update resolve-user.ts

* maxQueryExecutionTime

* wip

* wip

packages/backend/src/server/api/endpoints/admin/accounts/create.ts

@@ -1,6 +1,7 @@
 import define from '../../../define.js';
 import { Users } from '@/models/index.js';
 import { signup } from '../../../common/signup.js';
+import { IsNull } from 'typeorm';
 
 export const meta = {
 	tags: ['admin'],
@@ -29,9 +30,9 @@ export const paramDef = {
 
 // eslint-disable-next-line import/no-default-export
 export default define(meta, paramDef, async (ps, _me) => {
-	const me = _me ? await Users.findOneOrFail(_me.id) : null;
-	const noUsers = (await Users.count({
-		host: null,
+	const me = _me ? await Users.findOneByOrFail({ id: _me.id }) : null;
+	const noUsers = (await Users.countBy({
+		host: IsNull(),
 	})) === 0;
 	if (!noUsers && !me?.isAdmin) throw new Error('access denied');