Spring Security. Stateless

1. Implement method protected void configure(HttpSecurity http) in the SecurityConfig class
2. Permit access for all user to /register, /login, /inject endpoints
3. Permit access only for ADMIN to all endpoints marked with @DeleteMapping annotation
4. Create and implement class JwtTokenProvider
5. Create and implement class JwtTokenFilter
6. Create and implement class JwtConfigurer
7. Implement "/login" endpoint
8. Create your own exception InvalidJwtAuthenticationException