feat: create goal as entity

Signed-off-by: Otavio Santana <[email protected]>

Author: otaviojava

src/main/java/os/expert/sample/Goal.java

@@ -0,0 +1,6 @@
+package os.expert.sample;
+
+import java.util.List;
+
+public record Goal(String title, String description, List<Task> tasks) {
+}

src/main/java/os/expert/sample/GoalResource.java

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+package os.expert.sample;
+
+public class GoalResource {
+}

src/main/java/os/expert/sample/Task.java

@@ -0,0 +1,4 @@
+package os.expert.sample;
+
+public record Task() {
+}