Fixed class lifetimes

mist-test/src/task.mist

@@ -0,0 +1,20 @@
+public enum TaskState {
+    Pending,
+    Running,
+    Finished,
+    Failed,
+}
+
+public struct Task {
+    public String name,
+    public TaskState state,
+    public i32 executions,
+}
+
+public Task create_task(str* name) {
+    return Task {
+        name: name.to_string(),
+        state: TaskState::Pending,
+        executions: 0,
+    };
+}