FEAT: Implement Team Management

- [ ] Add support for invitation url
- [x] Implement Team Management Controllers
- [x] Implement Team Management Models
- [ ] Add RBAC for Team
- [ ] Add Team Management Routes

The issue outlines tasks for team management: invitation URLs, RBAC, and routes. Start by examining existing team management controllers and models to understand the current structure. Look for route definitions and authorization logic to see where new endpoints and RBAC checks should be added. Implement the missing pieces, ensuring integration with the existing Kubernetes-native chaos engineering toolkit.

索引モデルが issue の本文から書いたものです。