rename UserDetailsServiceImpl to CustomUserDetailsService

Author: Ivan Franchin

order-api/src/main/java/com/ivanfranchin/orderapi/security/UserDetailsServiceImpl.java renamed to order-api/src/main/java/com/ivanfranchin/orderapi/security/CustomUserDetailsService.java

@@ -14,7 +14,7 @@
 
 @RequiredArgsConstructor
 @Service
-public class UserDetailsServiceImpl implements UserDetailsService {
+public class CustomUserDetailsService implements UserDetailsService {
 
     private final UserService userService;