refactor name to be more precise for easier search later on

src/main/java/de/pnreichmuth/timekeep_backend/entities/Racer.java

@@ -12,9 +12,10 @@ import java.util.UUID;
 public class Racer{
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
-    private UUID id;
+    private UUID racerID;
 
-    private String name;
+    private String firstName;
+    private String lastName;
     private Boolean isFirstSemester;
     private String phoneNumber;
 }