Gerneric image codec abstraction init (#6)

* remove raw pointer from resource manager

* towards generic images

* 💅 and pin libCZI module

* remove raw pointer from resource manager

* towards generic images

* fix rendering

* fix rendering

* fix unit tests

* fix pipeline

* fix gcc build

* re-enable tests

* add czi impl

* remove resource button

* refactor user code app to being a "default app"

* ui resources

* missing lib?

* init czi render support

* typos

lib/imaging/IPixelariumImage.hpp

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <filesystem>
+#include <functional>
+#include <memory>
+#include <opencv2/core/mat.hpp>
+#include <optional>
+#include <string>
+
+namespace pixelarium::imaging
+{
+using ImageQueryFunctor = std::function<void(const std::string&, void*, int*)>;
+
+enum class ImageFileType
+{
+    UNKNOWN = -10,
+    ABSTRACT = 0,
+    PNG = 1,
+    JPG = 2,
+    CZI = 3,
+};
+
+/// @brief An abstract interface to define a semantic query
+/// for a multi-dimensional image.
+struct IImageQuery
+{
+    virtual ~IImageQuery() = default;
+};
+
+/// @brief This aims to be a generic image abstraction
+/// meant for codec specific implementation.
+class IPixelariumImage
+{
+   public:
+    virtual ~IPixelariumImage() = default;
+
+    // this will have to throw or something for multidimensional images
+    virtual std::optional<std::unique_ptr<cv::Mat>> TryGetImage() = 0;
+
+    virtual std::optional<std::unique_ptr<cv::Mat>> TryGetImage(const IImageQuery&) = 0;
+
+    virtual std::string Name() const noexcept = 0;
+
+    virtual bool Empty() const noexcept = 0;
+
+    virtual std::filesystem::path Uri() const noexcept = 0;
+
+   public:
+    const static ImageFileType type_{ImageFileType::ABSTRACT};
+
+   protected:
+    std::filesystem::path uri_;
+};
+
+}  // namespace pixelarium::imaging