Misc (#19)

* get image returns optional<Mat> instead of unique_ptr<Mat>

* introduce complexity

* rename image load function

* add example for a basic reader for binary image files

* fix windows build?

* add a status bar underneath the menu bar

* use status bar in custom_0 example app

* clang formats

* packing w/ pragma push

* add "Save As" functions to image views

* resize over reserve

* rm local override uri

* add simple thread pool

* rename to simple_thread_pool

* get rid of useless renderlib

* document version inc

* extract hardcoded values to in-header

* clang format patch

* clone registered image in custom_0

* document binary-file header

* minor fixes

* clang format

* rm unused render cmake

lib/app/rendering/ImageViewFactory.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "IPixelariumImageView.hpp"
+#include "resources/resource.hpp"
+#include "utilities/ILog.hpp"
+
+namespace pixelarium::application
+{
+/// @brief Factory for instantiating matching views to different implementations of IPixelariumImage.
+class ImageViewFactory
+{
+    using Image = imaging::IPixelariumImageCvMat;
+    using Pool = resources::ImageResourcePool;
+    using Log = utils::log::ILog;
+
+   public:
+    explicit ImageViewFactory(Pool& pool, const Log& log) : image_pool_(pool), log_(log) {}
+
+    std::unique_ptr<IPixelariumImageView> RenderImage(resources::ResourceKey id);
+
+   private:
+    Pool& image_pool_;
+    const Log& log_;
+};
+}  // namespace pixelarium::application