Proper image rendering ux (#5)

* can draw from selection

* add light-weight render manager to render many images simultaneously

* [debug me] currently the image close button does not do

* the unselected image can be closed now

* can close images and manually open them on demand

* cosmetic

* image view stuff in render subdirectory

* cosmetic

* generate docs

* review

windows support

some cosmetics

💅 and pin libCZI module

lib/rendering/ImageViewFactory.hpp

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "PixelariumImageView.hpp"
+#include "imaging/PixelariumImage.hpp"
+#include "resources/resource.hpp"
+namespace pixelarium::render
+{
+class ImageViewFactory
+{
+    using Image = imaging::PixelariumImage;
+    using Pool = resources::ImageResourcePool;
+
+   public:
+    explicit ImageViewFactory(Pool& pool) : image_pool_(pool) {}
+
+    std::unique_ptr<PixelariumImageView> RenderImage(size_t id);
+
+   private:
+    Pool& image_pool_;
+};
+}  // namespace pixelarium::render