Add example solution for hello problem

vmcj · vmcj · commit 90f1dba59db4 · 2024-01-03T13:35:10.000Z
diff --git a/example_problems/hello/submissions/accepted/test-hello.ml b/example_problems/hello/submissions/accepted/test-hello.ml
@@ -0,0 +1 @@
+print_endline "Hello world!"
