Move processes logic to separate worker

The electron has 2 processes by default `main` and `renderer`
Now we keep all processes on `renderer` that start causing UI freezes due to blocking resource usages (loops API calls etc...)

We should move `beacon node watcher` and `validator` to own processes to increase application resilience in case of `renderer` die to the application is not stoping with doing duties, and offload renderer for smoother UX

https://www.electronjs.org/docs/tutorial/performance#how-2
https://www.electronjs.org/docs/tutorial/performance#how-3
https://www.electronjs.org/docs/tutorial/multithreading