commit modify post gateway post repo

src/main/java/gateway/PostGateway.java

@@ -1,5 +1,8 @@
 package gateway;
 
-public interface PostGateway {
+import questionentities.Post;
 
+public interface PostGateway {
+    void savePost(Post post);
+    Post getPost(int postId);
 }

src/main/java/gateway/PostRepo.java

@@ -1,5 +1,17 @@
 package gateway;
 
+import questionentities.Post;
+
 public class PostRepo implements PostGateway{
     DatabaseConnection databaseConnection;
+
+    @Override
+    public void savePost(Post post) {
+
+    }
+
+    @Override
+    public Post getPost(int postId) {
+        return null;
+    }
 }