Introduce ArrayWrapper?D, replacing ConstExpression?DArrayCopy

+ no explicit copy constructor of structs needed any more
+ removed assignment operator of structs that don't hold a const sType member (for those, we still need the assignment operator!)
+ simplified operator==() of structs (pre C++20)
+ resolved some 32bit warnings

samples/utils/utils.hpp

@@ -47,7 +47,7 @@ namespace vk
     }
 
     template <class T>
-    void copyToDevice(vk::UniqueDevice const& device, vk::UniqueDeviceMemory const& memory, T const* pData, size_t count, size_t stride = sizeof(T))
+    void copyToDevice(vk::UniqueDevice const& device, vk::UniqueDeviceMemory const& memory, T const* pData, size_t count, vk::DeviceSize stride = sizeof(T))
     {
       assert(sizeof(T) <= stride);
       uint8_t* deviceData = static_cast<uint8_t*>(device->mapMemory(memory.get(), 0, count * stride));