feat: Implement rest API endpoint to delete user

packages/backend/src/controllers/api/v1/admin/users/delete-user.js

@@ -0,0 +1,10 @@
+import User from '../../../../../models/user.js';
+
+export default async (request, response) => {
+  const id = request.params.userId;
+
+  const user = await User.query().findById(id).throwIfNotFound();
+  await user.softRemove();
+
+  response.status(204).end();
+};

packages/backend/src/controllers/api/v1/admin/users/delete-user.test.js

@@ -0,0 +1,50 @@
+import { vi, describe, it, beforeEach } from 'vitest';
+import request from 'supertest';
+import Crypto from 'crypto';
+import app from '../../../../../app.js';
+import createAuthTokenByUserId from '../../../../../helpers/create-auth-token-by-user-id';
+import { createUser } from '../../../../../../test/factories/user';
+import { createRole } from '../../../../../../test/factories/role';
+import * as license from '../../../../../helpers/license.ee.js';
+
+describe('DELETE /api/v1/admin/users/:userId', () => {
+  let currentUser, currentUserRole, anotherUser, token;
+
+  beforeEach(async () => {
+    currentUserRole = await createRole({ key: 'admin' });
+    currentUser = await createUser({ roleId: currentUserRole.id });
+
+    anotherUser = await createUser();
+
+    token = await createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should soft delete user and respond with no content', async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    await request(app)
+      .delete(`/api/v1/admin/users/${anotherUser.id}`)
+      .set('Authorization', token)
+      .expect(204);
+  });
+
+  it('should return not found response for not existing user UUID', async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    const notExistingUserUUID = Crypto.randomUUID();
+
+    await request(app)
+      .delete(`/api/v1/admin/users/${notExistingUserUUID}`)
+      .set('Authorization', token)
+      .expect(404);
+  });
+
+  it('should return bad request response for invalid UUID', async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    await request(app)
+      .delete('/api/v1/admin/users/invalidUserUUID')
+      .set('Authorization', token)
+      .expect(400);
+  });
+});