feat(client): Add Cypress end-to-end test and configure webpack-dev-server for Cypress

[mertcanaltin]

This commit introduces an end-to-end test using Cypress to ensure the overall functionality of the project. Additionally, webpack-dev-server has been configured specifically for Cypress component tests, enabling faster and more efficient testing of individual components. These updates enhance the testing capabilities of the project and improve the overall development workflow fyi @kayraberktuncer 👨‍🚀