set execution policy on scoop install
set execution policy on scoop install

I've tested this by running updated script as below:
```iex (new-object net.webclient).downloadstring('https://gist.githubusercontent.com/mikhail-tsennykh/f65a3addf22b36681b1eb7c6d708bed2/raw/4040fe0c156512a63b1dcfea2fd5595b26e1a1f1/scoop%2520auto%2520set%2520execution%2520policy%2520test')```

nice to skip extra step (unless there is some good reason not to do it on scoop install).
bpollack/scoop,yunspace/scoop,berwyn/scoop,nikolasd/scoop,vidarkongsli/scoop,Cyianor/scoop,nueko/scoop,rasa/scoop,kodybrown/scoop,rodericktech/scoop,r15ch13/scoop,lukesampson/scoop,reelsense/scoop,coonce/scoop,toxeus/scoop,Congee/scoop,vinaynambiar/lukesampson-