implement API Json error and generator

src/main/java/wtf/beatrice/releasehive/model/ApiError.java

@@ -0,0 +1,33 @@
+package wtf.beatrice.releasehive.model;
+
+import jakarta.persistence.Entity;
+
+import java.util.UUID;
+
+@Entity
+public class ApiError
+{
+    UUID exceptionId;
+
+    String message;
+
+    public ApiError() {
+        exceptionId = UUID.randomUUID();
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public UUID getExceptionId() {
+        return exceptionId;
+    }
+
+    public void setExceptionId(UUID exceptionId) {
+        this.exceptionId = exceptionId;
+    }
+}