fix: securize endpoint for signup and rework ErrorController

[lwih]

No description provided.

[github-actions]

Coverage Report for frontend

Status	Category	Percentage	Covered / Total
🟢	Lines	58.25% (🎯 40%)	2533 / 4348
🟢	Statements	57.37% (🎯 40%)	2636 / 4594
🟢	Functions	43.63% (🎯 40%)	610 / 1398
🟢	Branches	48.23% (🎯 40%)	1024 / 2123

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
frontend/src/pages/signup.tsx	22.85%	4.34%	50%	22.85%	44-77, 82-104
frontend/src/v2/pages/home.tsx	15.38%	0%	0%	15.38%	15-33

Generated in workflow #1614 for commit a347691 by the Vitest Coverage Report Action

[github-actions]

Overall Project	50.13% -0.23%	❌
Files changed	29.84%	❌

File	Coverage
RoleTypeEnum.kt	100%	🍏
SecurityConfig.kt	68.4% -20.35%	❌
TokenService.kt	36.57% -35.07%	❌
FrontendRoutesController.kt	0%	❌
ApiErrorController.kt	0% -96.15%	❌
ApiAuthController.kt	0%	🍏