feat: divide the backend on 2 instances, run first instance on 3000port, second one on 3001port, add loadbalancer

feat: containerize front-end, back-end and database parts in different containers, apply declarative approach, provide the opportunity to connect to database with credentials, entered at the application runtime in the terminal

feat: implement server side of such tasks like get todo by id, get all todos, delete todo, update todo status etc.

feat: implement login and authorization logic on the server side and unite the logic about this from both client and server sides