Move the exercise search to the new endpoint

[rolandgeider]

Use case

Reduce special cases by moving the exercise search to the new endpoint

Proposal

At the moment, the exercise search (searchExerciseTranslations) uses an explicit search endpoint. We should use the regular exercise endpoint instead. Also note that while this issue needs an updated backend, we can just start by using the results from calling /api/v2/exerciseinfo and just using the results. Edit: The backend changes have been merged

Additional Context

No response

[FilipCuper]

Hello @rolandgeider. Could I be assigned to this issue ? I have an assigment in school to choose an issue in a repository and resolve it.

[rolandgeider]

sure @FilipCuper, it's yours