Rename tutorial to quickstart (#4941)

docs/quickstart/cpp/src/creating_the_tiles_from_cpp.md

@@ -0,0 +1,27 @@
+<!-- Copyright © SixtyFPS GmbH <info@slint.dev> ; SPDX-License-Identifier: MIT -->
+
+# Creating The Tiles From C++
+
+This step places the game tiles randomly.
+
+Change the `main` function and includes in `src/main.cpp` to the following:
+
+```cpp
+{{#include main_tiles_from_cpp.cpp:main}}
+```
+
+The code takes the list of tiles, duplicates it, and shuffles it, accessing the `memory_tiles` property through the C++ code.
+
+For each top-level property, Slint generates a getter and a setter function. In this case `get_memory_tiles` and `set_memory_tiles`.
+Since `memory_tiles` is a Slint array, it's represented as a [`std::shared_ptr<slint::Model>`](https://slint.dev/docs/cpp/api/classslint_1_1model).
+
+You can't change the model generated by Slint, but you can extract the tiles from it and put them
+in a [`slint::VectorModel`](https://slint.dev/docs/cpp/api/classslint_1_1vectormodel) which inherits from `Model`.
+`VectorModel` lets you make changes and you can use it to replace the static generated model.
+
+Running this code opens a window that now shows a 4 by 4 grid of rectangles, which show or hide
+the icons when a player clicks on them.
+
+There's one last aspect missing now, the rules for the game.
+
+<video autoplay loop muted playsinline src="https://slint.dev/blog/memory-game-tutorial/creating-the-tiles-from-rust.mp4"></video>