Refactor multisampling implementation for improved clarity.

Migrated codebase to use `vk::` RAII wrappers, enhanced type safety, and updated Vulkan API conventions. Made textual corrections in documentation for grammatical consistency and clarity. Adjusted resource creation and rendering process to comply with Vulkan's multi-sampling requirements.

Author: gpx1000

attachments/30_multisampling.cpp

@@ -369,7 +369,7 @@ class HelloTriangleApplication {
     void createRenderPass() {
         vk::AttachmentDescription colorAttachment({}, swapChainImageFormat, msaaSamples, vk::AttachmentLoadOp::eClear,
          vk::AttachmentStoreOp::eStore, vk::AttachmentLoadOp::eDontCare, vk::AttachmentStoreOp::eDontCare, vk::ImageLayout::eUndefined,
-          vk::ImageLayout::ePresentSrcKHR);
+          vk::ImageLayout::eColorAttachmentOptimal);
         vk::AttachmentDescription depthAttachment({}, findDepthFormat(), msaaSamples, vk::AttachmentLoadOp::eClear,
         vk::AttachmentStoreOp::eDontCare, vk::AttachmentLoadOp::eDontCare, vk::AttachmentStoreOp::eDontCare, vk::ImageLayout::eUndefined,
         vk::ImageLayout::eDepthStencilAttachmentOptimal);