refactor layout.h into single file per Node* classes

engine/node_settings.cpp

@@ -0,0 +1,26 @@
+#include "pch.h"
+#include "log.h"
+#include "node_settings.h"
+#include "layout.h"
+
+Node* NodeSettings::clone_instantiate() const
+{
+    return new NodeSettings();
+}
+
+void NodeSettings::init()
+{
+    SetPosition(0, 0);
+    SetWidthP(100);
+    SetHeightP(100);
+    SetPositioning(YGPositionTypeAbsolute);
+    m_template = (*m_manager)[const_hash("settings")]->m_children[0]->clone();
+    add_child(m_template);
+    btnOk = m_template->find<NodeButton>("btn-ok");
+    btnOk->on_click = [&](Node*) { destroy(); };
+}
+
+kEventResult NodeSettings::handle_event(Event* e)
+{
+    return kEventResult::Consumed;
+}