Exception handling #82

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stne3960 wants to merge 6 commits from feature/exception-handling into main

Author	SHA1	Message	Date
nenzen	9e63eb6406	Prettier and checkstyle All checks were successful Code style BFF / check (pull_request) Successful in 1m28s Details Deploy to branch.dsv.su.se / deploy (pull_request) Successful in 5m19s Details	2026-01-30 11:42:17 +01:00
nenzen	0367923123	Add GlobalExceptionHandler	2026-01-30 07:38:51 +01:00
nenzen	8d04c5efdc	Add ServiceUnavailableException	2026-01-30 07:38:12 +01:00
nenzen	42abc19ffa	Add ForbiddenException	2026-01-30 07:38:12 +01:00
nenzen	09931c5170	Add ValidationException with field violations	2026-01-30 07:38:01 +01:00
nenzen	3c3508a956	Add StudentportalenException base class	2026-01-30 07:23:28 +01:00