HELP NEEDED: Find out suitable testing strategy (unit tests, e2e tests)

[trobonox]

I am currently debating how the application should be tested, open for ideas (frameworks to use, what approach makes most sense for this app). Since the app uses TypeScript, mostly saving logic to JSON and drag-n-drop would have to be tested, so unit tests might be the most appropriate.

Tracking issue, open for suggestions/ideas.