fix: better url (#20)

Co-authored-by: TakahashiNg <83152264+TakahashiNguyen@users.noreply.github.com>
Reviewed-on: #20

lib/src/main/java/com/drinkool/Role.java

@@ -3,4 +3,5 @@ package com.drinkool;
 public class Role {
 
 	public static final String Customer = "customer";
+	public static final String Manager = "manager";
 }

lib/src/main/java/com/drinkool/dtos/ManagerSignup.java

@@ -0,0 +1,5 @@
+package com.drinkool.dtos;
+
+public class ManagerSignup extends Signup {
+    public String eateryName;
+}