update auth

- add tables and repos
- add dto

src/main/java/de/w665/biblenotes/rest/dto/AuthenticationRequest.java

@@ -0,0 +1,15 @@
+package de.w665.biblenotes.rest.dto;
+
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+
+@NoArgsConstructor
+@Getter
+@Setter
+@ToString
+public class AuthenticationRequest {
+    private String username;
+    private String password;
+}