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/resources/resource.cpp

@@ -6,7 +6,7 @@
 #include <mutex>
 #include <optional>
 
-using pixelarium::imaging::PixelariumImage;
+using pixelarium::imaging::IPixelariumImage;
 using namespace std;
 
 namespace
@@ -22,19 +22,24 @@ size_t GenerateId() { return id_.fetch_add(1, memory_order_relaxed); }
 /// @brief Retrieves a resource from the pool.
 /// @param id The ID of the resource to retrieve.
 /// @return A pointer to the resource if found, otherwise an empty optional.
-std::optional<const PixelariumImage*> pixelarium::resources::ImageResourcePool::GetResource(ResourceKey id) const
+std::optional<std::weak_ptr<IPixelariumImage>> pixelarium::resources::ImageResourcePool::GetResource(ResourceKey id) const
 {
     auto search{this->resources_.find(id)};
     if (search == this->resources_.end()) return std::nullopt;
 
-    return search->second.get();
+    return search->second;
 }
 
 /// @brief Sets a resource in the pool.
 /// @param res A unique pointer to the resource to set.
 /// @return The ID of the new resource.
-size_t pixelarium::resources::ImageResourcePool::SetResource(unique_ptr<PixelariumImage> res)
+size_t pixelarium::resources::ImageResourcePool::SetResource(unique_ptr<IPixelariumImage> res)
 {
+    if (res == nullptr)
+    {
+        throw empty_resource_exception();
+    }
+
     auto key{::GenerateId()};
     {
         std::lock_guard<std::mutex> guard(this->mut_);
@@ -49,7 +54,7 @@ size_t pixelarium::resources::ImageResourcePool::SetResource(unique_ptr<Pixelari
 /// @param res A unique pointer to the new resource.
 /// @return True if the resource was updated, false otherwise.
 bool pixelarium::resources::ImageResourcePool::ModifyResource(ResourceKey id,
-                                                              std::unique_ptr<imaging::PixelariumImage> res)
+                                                              std::unique_ptr<imaging::IPixelariumImage> res)
 {
     auto search{this->resources_.find(id)};
     if (search == this->resources_.end()) return false;
@@ -76,7 +81,7 @@ bool pixelarium::resources::ImageResourcePool::DeleteResource(ResourceKey id)
 /// @param func A function to call for each resource.  The function should accept the resource ID and a const reference
 /// to a PixelariumImage.
 void pixelarium::resources::ImageResourcePool::EnumerateResources(
-    const std::function<void(ResourceKey, size_t, const imaging::PixelariumImage&)>& func)
+    const std::function<void(ResourceKey, size_t, const imaging::       IPixelariumImage&)>& func)
 {
     size_t idx{0};
     for (const auto& e : this->resources_)