Improvements to the main tutorial conclusion.adoc

[iagoCL]

Summary

A common complaint is that, after completing a basic Vulkan tutorial, the next step is not clear. I think we should try to address this.

conclusion.adoc currently includes Building a Simple Game Engine and AI-Assisted Vulkan Development.

Proposed changes

Navigation error - BUG

I cannot find https://docs.vulkan.org/tutorial/latest/conclusion.html in the sidebar of the web version. Maybe it is because it is missing from antora/modules/ROOT/nav.adoc.

Expand current resources

• Add links to Khronos Vulkan Samples and Sascha Willems’ Vulkan samples.
• Add links to Vulkanised. We might want to recommend some beginner-focused talks.
• The introduction contains some non-Vulkan rendering-learning resources, but we might want to repeat and expand them here.