Merge changes from topic "vulkan-1.4" into main

* changes:
  Update libvulkan linker map for 1.4
  Add feature xml for Vulkan version 1.4
  Add support for Vulkan 1.4 core entrypoints to nulldrv
  Allow vkjson to report on 1.4 instances
  Add support for vulkan api level 1.4 in loader
  Regenerate vulkan-loader for 1.4