Automated tests

[NuttyShrimp]

• Adds playwright test
• Adds github action on default branch + Pr's to development branch

closes #23

[NuttyShrimp]

It seems there is an issue in chromium where the datatable doesn't rerender when the new data is retrieved. But in firefox is rerenders perfectly.
I've tried to add v-model to the value of the table & setting the selectedEntry to a whole new object when I refresh the permissions but without any luck.
It's very strange that in only happens when data is removed but not when new entries are added to the permissions array

[bjdmeest]

Looks good to me!

@mvanbrab could you rebase and run it locally before deploying it for Onto-DESIDE?