Migrate build stack (create-react-app not supported any more)

[HenrikeW]

Please describe the feature

As a developer, I want to be able to smoothly build the project.

Detailed description

When we started the project, we used create-react-app to set it up. create-react-app is now not supported any more. More details here, for example.
We need to

• check which dependencies came with create-react-app and which of them are not supported any more
• check if we want to migrate to another framework, e.g. Vite, Next, Remix, ...
• if yes, migrate.

Additional context