Added Post NEW and GET API

src/main/java/site/easystartup/web/post/dto/PostDto.java

@@ -0,0 +1,24 @@
+package site.easystartup.web.post.dto;
+
+import lombok.Data;
+
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+import java.io.Serializable;
+import java.util.Date;
+import java.util.List;
+
+@Data
+public class PostDto implements Serializable {
+    private long id;
+    @Size(min = 3, max = 1024, message = "Text should be no less 3 and no more 1024 signs")
+    @NotNull
+    private String text;
+    private String sender;
+    private Date date;
+    private boolean edited;
+    private long discussion_id;
+    private long like;
+    private List<Long> answers;
+    private long answered_post;
+}