feat: key pressed event interception & 'owner' input.add_callback third argument

src/logic/scripting/lua/libs/libgui.hpp

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <memory>
+
+#include "api_lua.hpp"
+#include "frontend/UiDocument.hpp"
+#include "graphics/ui/elements/UINode.hpp"
+
+struct DocumentNode {
+    UiDocument* document;
+    std::shared_ptr<gui::UINode> node;
+};
+
+DocumentNode get_document_node(lua::State* L, int idx = 1);